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Car not had oil changed in 5 years / 60,000 miles. - OceanMan

So a few weeks ago I bought my girlfriend's car, it hadn't had the oil changed or been serviced at all since she'd owned it. 5 years, roughly 60k miles. Somehow she never had problems with it. She only Ever had minor issues and never broke down etc.

Now, I changed the oil and filter as soon as I got it a few weeks ago. I've driven it everyday, twice across the country and it *seems* absolutely fine. Drives smoothly (it's a 09 fiesta), isn't too loud etc.

Is it possible that I've gotten really lucky and just by chance avoided major issues? Or is it likely that the problems from the lack of oil changing years ago could still be lurking and bite me down the line?

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

Might be worth taking the rocker cover off and having a look see how much carbonised oil residue is built up inside over the rockers and inside the cover, that will give you an idea if such muck is likely to be gumming up the oil pick up strainer or likely to be dislodged and work it way down there.

I suspect this is a fairly simple model, a turbocharged engine would more than likely have seized the first in a whole line of turbos by now, so if its clean in the crankcase it will probably be alright, we assume it isn't burning oil as such but maybe the odd time its been topped up with fresh oil has kept it going.

Car not had oil changed in 5 years / 60,000 miles. - bathtub tom
maybe the odd time its been topped up with fresh oil has kept it going

Wishful thinking GB. If it ain't had a service in five years, what chance she looked at the dipstick?

I suspect that it's a relatively modern car with modern oil in it and may have survived. I'd suggest the OP gives it another oil change fairly soon to flush out whatever's in it and keep their fingers crossed.

Car not had oil changed in 5 years / 60,000 miles. - craig-pd130

Any problems would in all likelihood have shown themselves by now, rather than with fresh oil.

Just keep an eye on oil level in case the cylinder bores have got a bit worn.

Is the engine the 1.25 non-turbo Zetec? If so, that's a strong engine.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Is the engine the 1.25 non-turbo Zetec? If so, that's a strong engine

My sil had one that she kept running out of oil never checked it and left to other family members to check when she felt like it, or remembered it, and wondered why it wouldn't start, 5 or 6 times it happened,

so I always topped it up after a phone call, and its still going strong, she sold it last year and its still about with 92k on the clock when sold so yes they are a strong unit

Car not had oil changed in 5 years / 60,000 miles. - John F

it hadn't had the oil changed or been serviced at all since she'd owned it. 5 years, roughly 60k miles.

Attagirl! What's the total mileage on this 10yr old car?

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

it hadn't had the oil changed or been serviced at all since she'd owned it. 5 years, roughly 60k miles.

Attagirl! What's the total mileage on this 10yr old car?

Looks like 92k from here, John .... But I don't think you should encourage anyone to find out how long their car will run without any attention beyond adding fuel when needed. Even you must admit that a car runs better for regular - if infrequent - maintenance.

Car not had oil changed in 5 years / 60,000 miles. - bazza

Sounds like lucky it didn't run out of oil! Which is I think what's just happened to a neighbour! I reckon you'll get away with it if it's not using oil or sounding rough. I would treat it to high quality oil at least once a year now. Agree that the 1.25 zetec is a peach of an engine.

Car not had oil changed in 5 years / 60,000 miles. - John F

Attagirl! What's the total mileage on this 10yr old car?

Looks like 92k from here, John .... But I don't think you should encourage anyone to find out how long their car will run without any attention beyond adding fuel when needed. Even you must admit that a car runs better for regular - if infrequent - maintenance.

Not only admit, but agree wholeheartedly. I just don't think low mileage drivers, often of limited means, should be persuaded that an oil change is necessary after only 365 days. Incidentally, you will doubtless be pleased to know that I changed the TR7's oil and filter last month - only 4,400 miles after the previous change.........in April 2013.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

"I just don't think low mileage drivers, often of limited means, should be persuaded that an oil change is necessary after only 365 days. Incidentally, you will doubtless be pleased to know that I changed the TR7's oil and filter last month - only 4,400 miles after the previous change.........in April 2013."

Check.

My last oil change interval was about 6 years, don't know the mileage but low. The engine looked very clean and (based on simple paper chromatography, certainly not full analytical evidence) there was no sign of oil deterioration. Mix of straight SAE40 and 15W40

Pictures here:

https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4884308/engine-after-sitting-in-humid-environment

However, since this car has a history of putting ferrous metal in its oil, I changed it out for a mix of straight SAE40 and 20W50 (recommendation IIRC was 10W30)

It looked fairly black in bulk. I kept it and might get around to some further investigation. Maybe a student project.

OP IF you've got sludge / varnish maybe try some dual use 15w/40 primarily intended for diesels, if that is allowed (as opposed to recommended) for that engine. This will have a high dose of dispersants.

In combination with the Group 1 SAE40 it apparently shifted quite a lot of hard varnish from my engine.

Edited by edlithgow on 14/08/2019 at 02:46

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

The mileage is just over 100k. The crazy thing is the oil service now dashboard light only came on recently, after I bought it. I'm pretty sure she never even topped it up. She made semi regular motorway journeys but I think most of her trips were short , city drives

It's a 1.25 style plus.

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

it hadn't had the oil changed or been serviced at all since she'd owned it. 5 years, roughly 60k miles.

Attagirl! What's the total mileage on this 10yr old car?

How did I know you were going to chip in with a comment or two on this thread?

;-)

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

it hadn't had the oil changed or been serviced at all since she'd owned it. 5 years, roughly 60k miles.

Attagirl! What's the total mileage on this 10yr old car?

Wow. And Yoda did say '"ther is ano-ther..."

Car not had oil changed in 5 years / 60,000 miles. - SLO76
Similar story to my now wife. When I first met her she had a 1997 P Peugeot 106 1.1. It looked great and felt tight on the road from the passengers seat but she complained that it was slow so I took it for a run. The thing wouldn’t break 70mph.

Turns out it hadn’t seen fresh oil in at least 4yrs, it was like treacle when I dipped it and the engine near to seizing. I had my trusted mechanic take a look, his recommendation was “scrap it.” The dealer in me couldn’t allow it so I managed to convince another local 4wd dealer who had taken a nice 53 plate Civic in part-ex to give me £500 for it against his already keenly priced car. A wee lesson for him for not looking under the bonnet or driving it and £450 more than the wee car was worth.

Had it been regularly serviced it would likely still be on the road but swmbo believed that an MOT was also a service and no further action (or cost) was required. You may get lucky but I wouldn’t buy anything that hasn’t seen fresh oil relatively regular. It’s worked out for me, in all my 25 years of car ownership I’ve yet to have a major failure. Touch wood.

Edited by SLO76 on 13/08/2019 at 23:47

Car not had oil changed in 5 years / 60,000 miles. - skidpan

All this nonsense about mixing your own oil in order to get a better product simply beggars belief.

Manufacturers spend countless hundreds of thousands of miles testing their cars in many different climates to ensure that their recommendations are correct for the car. They stand to make no more money from a specific spec of oil since regardless al are approx the same cost for a change (OK, fully synth is far more expensive than Woolworths 20w50 mineral was but that is unlikely to be used in a modern engine).

For a forum member to suggest that they know better is simply unbelievable considering they admit that kitchen roll is thier preferred testing method. And when they go on to admit that they have ferrous particles in the oil proves to me that the engine has severe wear which has possibly been caused by the wrong oil choice, who knows. All I do know is a change of oil or even the use of some snake oil will not fix an engine, only a strip, repair and rebuild will do that.

So to all that read this thread the answer is simple.

FOLLOW THE INSTRUCTIONS IN THE HANDBOOK/SERVICE BOOK. IF YOU DON'T HAVE EITHER ASK YOUR LOCAL DEALER.

Asking on here considering the amount of total nonsense posted is a sure way to an expensive failure.

Car not had oil changed in 5 years / 60,000 miles. - madf

All this nonsense about mixing your own oil in order to get a better product simply beggars belief.

Manufacturers spend countless hundreds of thousands of miles testing their cars in many different climates to ensure that their recommendations are correct for the car. They stand to make no more money from a specific spec of oil since regardless al are approx the same cost for a change (OK, fully synth is far more expensive than Woolworths 20w50 mineral was but that is unlikely to be used in a modern engine).

For a forum member to suggest that they know better is simply unbelievable considering they admit that kitchen roll is thier preferred testing method. And when they go on to admit that they have ferrous particles in the oil proves to me that the engine has severe wear which has possibly been caused by the wrong oil choice, who knows. All I do know is a change of oil or even the use of some snake oil will not fix an engine, only a strip, repair and rebuild will do that.

So to all that read this thread the answer is simple.

FOLLOW THE INSTRUCTIONS IN THE HANDBOOK/SERVICE BOOK. IF YOU DON'T HAVE EITHER ASK YOUR LOCAL DEALER.

Asking on here considering the amount of total nonsense posted is a sure way to an expensive failure.

I agree.

Car forums are full of people who know maore about the oil their car requires than the car makers and oil makers do..All based on a few years of tinkering vs tens of man years of qualifies experts doing multiple tests of many cars in differing environments.

I make sure I avoid anyuthing these forum experts state .. it's all opinion rather than fact..

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< Car forums are full of people who know more about the oil their car requires than the car makers and oil makers do..All based on a few years of tinkering vs tens of man years of qualified experts doing multiple tests of many cars in differing environments. >>

I don't think people reading a thread with this title will expect to find recommended treatment for their own engine. It's clearly a story about what some engines can stand up to when neglected. So I personally am happy to do without unnecessary brief sermons from doomsayers.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

It's clearly a story about what some engines can stand up to when neglected.

This engine is exceptional, over the years I have worked on loads, and none, (excluding those tested to destruction) that I know of have ever seized up through lack of oil or old oil. even though they can get messy inside....

others may know different, obviously.

Car not had oil changed in 5 years / 60,000 miles. - John F

...., over the years I have worked on loads, and none, (excluding those tested to destruction) that I know of have ever seized up ...... though they can get messy inside....

Quite so. I remember removing the rocker cover of my son's recently acquired neglected OHV Peugeot engine to adjust its rattling worn wide valve clearances, and removing lumps of black insp***ated sludge with a dessert spoon. Engine remained fine - and quieter!

In such discussions there is a hint of self-interest emanating from the motor trade which tries to penalise paupers by perpetuating anachronistic dogma concerning servicing requirements.

Car not had oil changed in 5 years / 60,000 miles. - madf

...., over the years I have worked on loads, and none, (excluding those tested to destruction) that I know of have ever seized up ...... though they can get messy inside....

Quite so. I remember removing the rocker cover of my son's recently acquired neglected OHV Peugeot engine to adjust its rattling worn wide valve clearances, and removing lumps of black insp***ated sludge with a dessert spoon. Engine remained fine - and quieter!

In such discussions there is a hint of self-interest emanating from the motor trade which tries to penalise paupers by perpetuating anachronistic dogma concerning servicing requirements.

But you are making the pooint that old tech engines with simple designs are quite forgiving of the lack of oil changes. But just because they run despite apalling neglect does not mean they will run anything like the efficiency planned for them I did exactly the same with younger son's Ford Fiesta 1.0 of early 1990s era. It ran despite appalling neglect but 35mpg and 500 miles/liter oil were the ouctome.

A modern OHC engine with variable valve timing controlled by oil pressure and small diameter oil pipes is not going to run very well when teh pipes are half choked with crud and the delicate clearnaces are screwed up by foreign particles in teh oil. These parts are often highly stressed.

Anyone who has driven a Toyota Yaris of c 1998-2995 will know they stand lots of abuse but the multi chain driving the camshaft will eventually wear out as will teh chain tnesioner due to lack of oil changes... Result noisy, poor performace and £500 to sort out properly at a garage.. All due to neglkecting oil changes. (Yes/: yoingest son had one of those after his Fiesta.. It kept running to 140k miles with new tensioner and chain fitted by me but power was way down due to camshaft lobe damage due to lack of oil changes)

Car not had oil changed in 5 years / 60,000 miles. - Bolt

But you are making the pooint that old tech engines with simple designs are quite forgiving of the lack of oil changes. But just because they run despite apalling neglect does not mean they will run anything like the efficiency planned for them

the only point I was making was that particular Ford engine is tolerant, I wasn't making the point all engines are, far from it, NOT all engines will, and most wont regardless of age, if it sounded like I was saying that, I wasn't!

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

Car forums are full of people who know maore about the oil their car requires than the car makers and oil makers do..All based on a few years of tinkering vs tens of man years of qualifies experts doing multiple tests of many cars in differing environments.

I make sure I avoid anyuthing these forum experts state .. it's all opinion rather than fact..

"it's all opinion rather than fact"

That isn't. Its an observation, supported by photographic evidence. Pretty factual, in fact.

The car had hard varnish after several years (at least 5) of dealer-servicing by-the-book.

After 6 years on that mix, without an oil change. No varnish.

Simplest explanation (supported by a plausiblte-but-unproven technical explanation, already) is that the mix shifted the varnish. but I can't be absolutely sure that another 6 years of dealer servicing wouldn't also have shifted it.

Not a controlled experiment, so other variables might be involved, but I can't think what they might be.

Climate change? Very popular as a random answer from my lazier students, who don't like thinking much either. These discussions are a useful reminder that this isnt restricted to feckless yoof..

The tooth fairy? (They don't know about the tooth fairy yet.)

IIRC there was another burst on the name-calling banjo when I mentioned my use of butane as an effective choke substitute.

i knew it was an effective choke substitute because when I used it the car started easily, and when I didn't, it didn't.

I knew it was acting as a choke substitute because the choke enriches the mixture, and so does adding fuel gas, inevitably.

I knew it wasn't diluting the oil (the context at the time) because its a gas, so it couldn't

Not really much scope for "öpinion"" there. Pretty factual, in fact.

Against that you got, AFAICT ""It isn't in the handbook so it can't be true"?

That's pretty sad.

But it probably isn't in my handbook either. Can't be sure because its in Chinese, and the pages are stuck together.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

All this nonsense about mixing your own oil in order to get a better product simply beggars belief.

Manufacturers spend countless hundreds of thousands of miles testing their cars in many different climates to ensure that their recommendations are correct for the car. They stand to make no more money from a specific spec of oil since regardless al are approx the same cost for a change (OK, fully synth is far more expensive than Woolworths 20w50 mineral was but that is unlikely to be used in a modern engine).

For a forum member to suggest that they know better is simply unbelievable considering they admit that kitchen roll is thier preferred testing method. And when they go on to admit that they have ferrous particles in the oil proves to me that the engine has severe wear which has possibly been caused by the wrong oil choice, who knows. All I do know is a change of oil or even the use of some snake oil will not fix an engine, only a strip, repair and rebuild will do that.

So to all that read this thread the answer is simple.

FOLLOW THE INSTRUCTIONS IN THE HANDBOOK/SERVICE BOOK. IF YOU DON'T HAVE EITHER ASK YOUR LOCAL DEALER.

Asking on here considering the amount of total nonsense posted is a sure way to an expensive failure.

“”All this nonsense about mixing your own oil in order to get a better product simply beggars belief””.

Yes, I was surprised by how well it turned out. Looks VERY SHINY in the pictures..

I hadn’t anticipated the cleaning effect of the Group I on the varnish though it makes sense in retrospect, given its higher solvency. The higher viscosity and shear resistance of the straight SAE 40, OTOH, is self-evident.

There ARE reports of rare negative effects of mixing multigrades, due to unexpected interactions between the viscosity modifiers. These have occured at extreme low temperatures (which I won’t see here) and since I’m mixing a straight weight with a multigrade, there is only one lot of viscosity modifiers involved, which should be fairly safe.

Here’s a professional oil formulators opinion on it.

https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4865769/re-can-too-thick-of-oil-be-damaging#Post4865769

Good discussion, but you won’t like it much. Too much thought.

“Manufacturers spend countless hundreds of thousands of miles testing their cars in many different climates to ensure that their recommendations are correct for the car”

Not for my car they don't.

Its difficult or impossible to buy an oil tailored for (a) a 1986 flat tappet engine with no catalyst and (b) Taiwanese climatic conditions.

This is not at all surprising since that would be a very niche market indeed.

I believe the original main recommendation was for 10W30 SG, Never seen that here.

As for the metal in the oil, I noted it on the original fill (which I think was 10W40) after I bought it.

Could be low ZDDP in ""modern "oils is a factor, but that's quite hard to avoid, even with thought, since it isn’t usually a published spec..

The car was dealer maintained by the previous owners, so if the ""wrong oil" was used, it was used by the dealer,

BUT you like dealers, don't you?. Don't you recommend dealer servicing as a way of avoiding the horror of THOUGHT?

Possibly the dealer didn't like thinking either, especially given the complete lack of any possible comeback for mis-specifying an oil for this car.

OTOH it could just be the metal in the oil is due to it being a 33 year-old engine that has lost case hardening on the cam lobes. In that case, its reasonable to expect thicker high zinc oil to, buy more time.

All I do know is a change of oil or even the use of some snake oil will not fix an engine, only a strip, repair and rebuild will do that.

OTOOH it’s NOT reasonable to expect a complete engine rebuild on a car with zero market value and no parts availability.

IIRC you’ve suggested that before, so its apparently a recurring fantasy. Resist it

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread. The overheating sign has come on a couple of times but that's probably more to do with coolant. Should top that up too.

Of course this could have been a fluke, or as some have said just a solid engine but from experts online (namely Scotty kilmer) I'd always believed it was essential to change oil every 10, or even 3 thousand miles for longevity. Perhaps not.

Thanks forall the replies anyway. It was an interesting discussion.

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread. The overheating sign has come on a couple of times but that's probably more to do with coolant. Should top that up too.

Of course this could have been a fluke, or as some have said just a solid engine but from experts online (namely Scotty kilmer) I'd always believed it was essential to change oil every 10, or even 3 thousand miles for longevity. Perhaps not.

Thanks forall the replies anyway. It was an interesting discussion.

Do you want to risk an engine failure costing thousands to fix for the sake of not changing the oil on schedule, costing about £50 - £75pa? Do you feel lucky? Well, do ya?

Seriously though, get the oil changed (and with the recommended grade/type), in fact, get a full service, including any fluids, filters etc that need replacing/topping up AS PER the manaufacturer's handbook. If you don't have one, as Skidpan says, go to your local main dealer, obtain one and get the service done. Servicing every 3k or 6k is rarely required for non-performance cars these days, but I personally would never follow the 'extended' service intervals recommened by mainly continental car manufacturers over the last 15-20 years.

Every year or 9-12.5k miles (whichever is first, and the lower if the handbook says so) will be fine, and shouldn't break the bank for most bog-standard cars.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread. The overheating sign has come on a couple of times but that's probably more to do with coolant. Should top that up too.

Of course this could have been a fluke, or as some have said just a solid engine but from experts online (namely Scotty kilmer) I'd always believed it was essential to change oil every 10, or even 3 thousand miles for longevity. Perhaps not.

Thanks forall the replies anyway. It was an interesting discussion.

Do you want to risk an engine failure costing thousands to fix for the sake of not changing the oil on schedule, costing about £50 - £75pa? Do you feel lucky? Well, do ya?

Seriously though, get the oil changed (and with the recommended grade/type), in fact, get a full service, including any fluids, filters etc that need replacing/topping up AS PER the manaufacturer's handbook. If you don't have one, as Skidpan says, go to your local main dealer, obtain one and get the service done. Servicing every 3k or 6k is rarely required for non-performance cars these days, but I personally would never follow the 'extended' service intervals recommened by mainly continental car manufacturers over the last 15-20 years.

Every year or 9-12.5k miles (whichever is first, and the lower if the handbook says so) will be fine, and shouldn't break the bank for most bog-standard cars.

The OP says in his OP that he changed the oil when he first got the car.

If you are going to preach to the choir, you should first check your text, since they probably know it.

Good point about the other fluids though. Probably needs brake juice and coolant done if the OP hasn't already.

Edited by edlithgow on 15/09/2019 at 00:41

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread. The overheating sign has come on a couple of times but that's probably more to do with coolant. Should top that up too.

Of course this could have been a fluke, or as some have said just a solid engine but from experts online (namely Scotty kilmer) I'd always believed it was essential to change oil every 10, or even 3 thousand miles for longevity. Perhaps not.

Thanks forall the replies anyway. It was an interesting discussion.

Do you want to risk an engine failure costing thousands to fix for the sake of not changing the oil on schedule, costing about £50 - £75pa? Do you feel lucky? Well, do ya?

Seriously though, get the oil changed (and with the recommended grade/type), in fact, get a full service, including any fluids, filters etc that need replacing/topping up AS PER the manaufacturer's handbook. If you don't have one, as Skidpan says, go to your local main dealer, obtain one and get the service done. Servicing every 3k or 6k is rarely required for non-performance cars these days, but I personally would never follow the 'extended' service intervals recommened by mainly continental car manufacturers over the last 15-20 years.

Every year or 9-12.5k miles (whichever is first, and the lower if the handbook says so) will be fine, and shouldn't break the bank for most bog-standard cars.

The OP says in his OP that he changed the oil when he first got the car.

If you are going to preach to the choir, you should first check your text, since they probably know it.

Good point about the other fluids though. Probably needs brake juice and coolant done if the OP hasn't already.

Indeed, but why on earth would they buy a car that hadn't had an oil change for at least 5 years, unless they too believed it 'wasn't a problem'? My thinking was that if you do think it's a problem, then you would not buy the car in the first place (it's not as though it's a classic car which may not have been driven in that period and would like need a complete overhaul anyway, the price refelecting that), or it wouldn't matter.

In my view, there's a good reason why cars without a full service history normally get a lot less when sold secondhand. I wonder whether this was the case here - I have a suspicions that it was not.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

In my view, there's a good reason why cars without a full service history normally get a lot less when sold secondhand. I wonder whether this was the case here - I have a suspicions that it was not.

Depends on how knowledgeable the person is, how much they want the car in question, and what was said by the seller, also bearing in mind these are so popular that some will pay more than they should for one even if they have problems

I know someone that has bought 2 of these in 5 years where they were told not to buy them due to oil leaks and burning oil, the person said they didn't mind if there was an easy fix which a mechanic replied yes (I advised against these cars due to expensive repair costs) but wasn't listened to, as this person really wanted the car

so in some cases, IF, a person really wants a car they wont listen to anyone that knows about cars and shrugs off problems as trivial until the problem gets worse and then complains about it when its too late

seems to be a common thing now, people buy a car because they like it and not for its reliability or the knowledge that there are costly problems if they do go wrong?

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

So in some cases, IF, a person really wants a car they wont listen to anyone that knows about cars and shrugs off problems as trivial until the problem gets worse and then complains about it when its too late

seems to be a common thing now, people buy a car because they like it and not for its reliability or the knowledge that there are costly problems if they do go wrong?

But a car's statistically-poor reliability doesn't guarantee that it will go wrong. Presumably the punters who 'won't listen' just feel lucky, but complain later that they weren't.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

But a car's statistically-poor reliability doesn't guarantee that it will go wrong. Presumably the punters who 'won't listen' just feel lucky, but complain later that they weren't.

My comment was about those people that were warned of problems that already exist with inspected second hand cars, not the advertised possible problems on new cars that may or may not occur over its lifetime

the attitude appears to be, I will worry about that when and if it happens

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread. The overheating sign has come on a couple of times but that's probably more to do with coolant. Should top that up too.

Of course this could have been a fluke, or as some have said just a solid engine but from experts online (namely Scotty kilmer) I'd always believed it was essential to change oil every 10, or even 3 thousand miles for longevity. Perhaps not.

Thanks forall the replies anyway. It was an interesting discussion.

Do you want to risk an engine failure costing thousands to fix for the sake of not changing the oil on schedule, costing about £50 - £75pa? Do you feel lucky? Well, do ya?

Seriously though, get the oil changed (and with the recommended grade/type), in fact, get a full service, including any fluids, filters etc that need replacing/topping up AS PER the manaufacturer's handbook. If you don't have one, as Skidpan says, go to your local main dealer, obtain one and get the service done. Servicing every 3k or 6k is rarely required for non-performance cars these days, but I personally would never follow the 'extended' service intervals recommened by mainly continental car manufacturers over the last 15-20 years.

Every year or 9-12.5k miles (whichever is first, and the lower if the handbook says so) will be fine, and shouldn't break the bank for most bog-standard cars.

The OP says in his OP that he changed the oil when he first got the car.

If you are going to preach to the choir, you should first check your text, since they probably know it.

Good point about the other fluids though. Probably needs brake juice and coolant done if the OP hasn't already.

Indeed, but why on earth would they buy a car that hadn't had an oil change for at least 5 years, unless they too believed it 'wasn't a problem'?

It was his girlfriends car. That complicates things a bit. He might be doing her a favor (getting rid), and/or she him (on price), and he knows the worst, which isn't the case buying from a stranger.

I personally wouldn't worry about the long change interval per se much (as above, my last change interval was about 6 years on a mineral mix ), but I would a bit on that mileage, which IIRC was above average.

Buying well used without a full service record is what I usually do anyway, so there's a good chance I'm buying a similarly abused car which has had its oil changed just before sale,

Car not had oil changed in 5 years / 60,000 miles. - Lrac

Didn't he say he changed the oil as soon as he got the car?

Car not had oil changed in 5 years / 60,000 miles. - Lrac

OOps sorry already mentioned

Car not had oil changed in 5 years / 60,000 miles. - Happy Blue!

Scotty Kilmer is in America where they have a tradition of very frequent oil changes and less of a tradition of company cars with fleet managers looking to cut even pennies off the running costs.

America is also home to the lube station where it is common for a customer to pop in and have an oil change whilst drinking a coffee. This is not the case in Europe.

Hence European engines are designed to run longer between oil changes. I remember buying a 72,000 miles three year old Honda Accord in about 1997 and it had had services every three months. These days the same car would probably go for 12 months without needed to be inspected.

Car not had oil changed in 5 years / 60,000 miles. - John F

Scotty Kilmer is in America where they have a tradition of very frequent oil changes

I am not a fan of often absurd American thoughtless traditions which include selling machine guns to mentally ill people, male genital mutilation for no good reason.....and changing oil every 3000 miles as per 1950.

PS TR7 engine is just fine at nearly 40yrs old, 71,000 miles and oil changes approx every 5 years since 1989.

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

Scotty Kilmer is in America where they have a tradition of very frequent oil changes and less of a tradition of company cars with fleet managers looking to cut even pennies off the running costs.

America is also home to the lube station where it is common for a customer to pop in and have an oil change whilst drinking a coffee. This is not the case in Europe.

Hence European engines are designed to run longer between oil changes. I remember buying a 72,000 miles three year old Honda Accord in about 1997 and it had had services every three months. These days the same car would probably go for 12 months without needed to be inspected.

When I bought my first car, a mid 90s Micra, that had a 9k mile/12 months service interval. I also looked at a Honda Civic 1.3 built around the same time, and that had a 6k (cannot remember if that was also 12 months) service interval.

I suppose, like where HJ now resides, as well as in the US, oil changes (decent lube bays) are still very cheap compared with even indie garages in the UK, so they can afford to change oil more often, rather like making gas guzzlers because their fuel is much cheaper.

I suspect that the much larger annual mileages that the average North American car has to contend with also factors in - even the third-rate ones can end up doing well over 250k miles, something of a rarity in the UK unless a car is kept for a lifetime or used as a taxi.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread.

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

Car not had oil changed in 5 years / 60,000 miles. - carl duck
Have you tried rape seed oil? It’s made in the uk and very good.
Car not had oil changed in 5 years / 60,000 miles. - edlithgow
Have you tried rape seed oil? It’s made in the uk and very good.

That'll gell and then the engine will seixe. Troll elsewhere.

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

As far as I'm aware the oil wasn't topped up at all for 5 years when my gf owned it and the plow oil service light never came on....ill ask her for confirmation later

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Just in case anyone cares. The car's still fine. Driven it several hundred miles since starting this thread.

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

Judging by the ones I have seen on the road the oil burns by leaking past the valve seals,stems which is nothing new, a lot do it, but the driver never sees it, like oil passing the rings, its not often -unless its really serious- the driver doesn't see it as it clears before it would come into view

Car not had oil changed in 5 years / 60,000 miles. - SteveLee

.double post

Edited by SteveLee on 16/09/2019 at 21:21

Car not had oil changed in 5 years / 60,000 miles. - SteveLee

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

My old man's Austin Princess 1700 went round the clock twice on this principle, it was never serviced - not once - in its whole life - but had frequent oil top-ups. My mum wrote it off but it was still mechanically fine with over 240K miles on the clock.

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

My old man's Austin Princess 1700 went round the clock twice on this principle, it was never serviced - not once - in its whole life - but had frequent oil top-ups. My mum wrote it off but it was still mechanically fine with over 240K miles on the clock.

Yes, but other than the engine, how much gizmos did the car have? Probably not much. And you're telling me that not one part was ever greased/lubrictaed (outside of the engine), nothing ever wore out or degraded (e.g. the coolant, belts, pumps, etc) and was replaced in 240k miles? Sorry, but I don't believe that for a second, especially given the 'quality' of BL cars of that era. And topping up on oil does not get rid of the dirty oil.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

My old man's Austin Princess 1700 went round the clock twice on this principle, it was never serviced - not once - in its whole life - but had frequent oil top-ups. My mum wrote it off but it was still mechanically fine with over 240K miles on the clock.

Yes, but other than the engine, how much gizmos did the car have? Probably not much. And you're telling me that not one part was ever greased/lubrictaed (outside of the engine), nothing ever wore out or degraded (e.g. the coolant, belts, pumps, etc) and was replaced in 240k miles? Sorry, but I don't believe that for a second, especially given the 'quality' of BL cars of that era. And topping up on oil does not get rid of the dirty oil.

Reasonable in this context to take ""never serviced" to refer to the engine only.

Re "and topping up on oil does not get rid of the dirty oil." the need for topping up implies that some of the dirty oil is lost

It seems possible (though not very likely) that some particulates are too big to easily get past the piston rings, but these will likely get trapped by the filter (at least until it clogs).

Some might be heavy enough to settle out in the sump and not be readily re-suspended. They are then mostly harmless, but if, say, a rough road or fast driving re-suspended them they would become damaging.

Some sticky stuff like varnish seems also likely to stay behind on surfaces, (where it will be mostly harmless) but apart from these cass I'd think most (as in nearly all) of the contaminants will exit with the lost oil.

Edited by edlithgow on 17/09/2019 at 08:06

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Reasonable in this context to take ""never serviced" to refer to the engine only.

Re "and topping up on oil does not get rid of the dirty oil." the need for topping up implies that some of the dirty oil is lost

If people only top up they have no idea whats going on in the sump and if that is all they do I doubt they care or are interested

It seems possible (though not very likely) that some particulates are too big to easily get past the piston rings, but these will likely get trapped by the filter (at least until it clogs).

The engines first referred to had a habit of getting badly gummed up on the cylinder head and around the valve area, even the sump breather used to get badly clogged up but never cleaned out including the pipes to inlet manifold which often collapsed inside

Some might be heavy enough to settle out in the sump and not be readily re-suspended. They are then mostly harmless, but if, say, a rough road or fast driving re-suspended them they would become damaging.

Some sticky stuff like varnish seems also likely to stay behind on surfaces, (where it will be mostly harmless) but apart from these cass I'd think most (as in nearly all) of the contaminants will exit with the lost oil.

Plenty of gum and varnish in a ford cylinder head of this engine, always difficult to remove it though not many tried

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet
Plenty of gum and varnish in a ford cylinder head of this engine, always difficult to remove it though not many tried

Black death, caused entirely by neglect, leaving often poor quality oil in for far too long.

Didn't die out with Fords either, a few years ago my MB indy had two V12 engines stripped out with the rocker areas absolutely stuffed with carbonised gunge, neither serviced by him because he knows better through decades of experience.

In my own case, my Landcruiser had been maker's recommended serviced all of its 11 year before i bough it life, so 9k or annual whichever came first, when i first got it the oil would go dark within 200 miles of an oil change, after my much more frequent changes (with Diesel specific oil not the usual one size fits all stuff) its now covering 800 miles and rising before the engine oil starts to darken, this can only be the detergents in the clean oil breaking down caked on carbon, though the doses of Millers it gets in every fill up might be ensuring a better fuel burn as it keeps the injectors clean.

I take especial interest in the oil pick up strainer (inspecting through the sump plug at every service after several hours draining) due to this particular engine having the odd issue with leaking injector seals.

Whatever is happening is for the good, and to my mind proves you cannot beat good maintenance to make a vehicle not only last, but run at its best.

I've seen particularly German Diesels where within seconds of an oil change the oil is so dirty you would never know, of course this could be poor drainage, possibly from the rocker area where a sizeable quantity is being permanently marooned, but if this is the case what filth is being formed under those pools one wonders, and might dislodge for some reason years down the line.

Edited by gordonbennet on 17/09/2019 at 12:04

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I've seen particularly German Diesels where within seconds of an oil change the oil is so dirty you would never know, of course this could be poor drainage, possibly from the rocker area where a sizeable quantity is being permanently marooned, but if this is the case what filth is being formed under those pools one wonders, and might dislodge for some reason years down the line.

A year or two after purchase I took the oil pump on the Skywing apart, in case it was contributing to the metal in the oil.

Seemed OK, but the pedestal mounting had casting voids in it which were absolutely full of semi-solid sludge.

I wonder how unusual this is. It would seem it makes deducing the state of the engine from the state of the oil rather difficult, since anything (including metal) seen in the oil might be "historical", rather than being currently generated.

Edited by edlithgow on 17/09/2019 at 12:51

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Black death, caused entirely by neglect, leaving often poor quality oil in for far too long.

Problem for some was they didn't know they had poor oil in it, and most didn't care, not until the engine wouldn't start one morning and didn't know why, you then get a person look at it and find the level is off the dipstick so they top it up so it starts

its then forgotten about until the next time, and then thoughts about a service come to mind but are soon forgotten about over time, and as and when it happens again the same thoughts go through the drivers mind but get forgotten about yet again

this is how some go on and wonder why they get problems, had it been a different engine they wouldn't be having these think abouts ....as the engine would be seized permanently

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

...as my ex-colleague discovered to his cost, his BMW diesel expiring on his driveway, ruining the engine, depositing its content on the drive and ruining that too. You don't look after a car (especially a sports or modern car), then it'll bite you in the bum.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

Don't doubt any of that, just querying the original statement, which I think was misleading.

"Topping up" is essentially a partial oil change, which, as has already been mentioned now I think on't, probably explains why you may be able to get away with it long term on some engines..

This doesn't imply that its an optimal thing to do.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< .... and you're telling me that not one part was ever greased/lubrictaed (outside of the engine) ... >>

I've had cars whose engines have been properly attended to, while other occasional lubrication seems to have been forgotten: in particular hinges (doors, bonnet, tailgate) and check straps. So doors can creak horribly, and I had one car with a bonnet hinge which seized and had to be drilled out.

It only takes a couple of minutes a year with spray grease .....

Car not had oil changed in 5 years / 60,000 miles. - madf

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

My old man's Austin Princess 1700 went round the clock twice on this principle, it was never serviced - not once - in its whole life - but had frequent oil top-ups. My mum wrote it off but it was still mechanically fine with over 240K miles on the clock.

SO orginal disks and pads?

Bull excrement..

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

I suppose a vehicle which can survive this kind of regime must either lose oil at a rate which demands frequent topping up (so the oil never gets worn out) or else loses none at all by leaking or burning. I wonder which it is ?

My old man's Austin Princess 1700 went round the clock twice on this principle, it was never serviced - not once - in its whole life - but had frequent oil top-ups. My mum wrote it off but it was still mechanically fine with over 240K miles on the clock.

SO orginal disks and pads?

Bull excrement..

I wouldn't have put it so bluntly, but that sort of thing was my question too - even me with my light right foot (though I'm no 'Captain Slow') could not manage 240k miles without changing the brake pads or discs (rather like mine about lubrication and other fluid changes).

I have managed around 65k though, when some were replaced, though I believe one or two are still originals, probably to be replaced over the next 20k miles. Maybe those old asbestos pads DID last longer, though I doubt if anyone is thanking the manufacturers for that.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< Maybe those old asbestos pads DID last longer, though I doubt if anyone is thanking the manufacturers for that. >>

IIRC asbestos pads were a lot softer than their replacements, which is why discs need replacing as well as pads these days. With asbestos I think discs very rarely wore out.

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

Not too sure that a properly driven vehicle (completely ignoring that ''brakes to slow gears to go'' cobblers) can't go it's whole expected life on its original pads and discs, much will depend on where and how its driven.

My lorry, 3 axle tractor unit, displays serviceable brake pads on the dash menu, axle 1 steer 90%, axle 2 lifting axle only in use when loaded 95%, axle 3 drive axle 84% remaining, this @ 108000 kms, so roughly 70000 miles, it does have a proper dual retarder fitted which i make extensive use of, but if this wear rate continues it should be knocking on 400,000kms before the heaviest drive axle brakes need new pads.

Driven properly and maintained properly, in both cases probably best to ignore the latest advice from the usual experts :-), it is surprising what can be achieved, same goes for turbo failures, decent regular oil changes and allowed to warm and cool reasonably equals no turbo issues.

A properly driven car there is no reason could not achieve these sorts of figures by making use of terrain and correct use of gears and engine braking to maintain progress.

You can tell at a glance how a vehicle is driven simply by looking at the front wheels, covered in thick ingrained brake dust equals driven poorly, on the brakes.

Edited by gordonbennet on 17/09/2019 at 20:45

Car not had oil changed in 5 years / 60,000 miles. - alan1302

ance how a vehicle is driven simply by looking at the front wheels, covered in thick ingrained brake dust equals driven poorly, on the brakes.

My car has that and am light on brakes...two sets of pads and one set of dics...discs and 2nd set of pad changed at 100,000 miles...it's because I don't clean them often.

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

You can tell at a glance how a vehicle is driven simply by looking at the front wheels, covered in thick ingrained brake dust equals driven poorly, on the brakes.

Indeed - another former colleague of mine (who was quite young at the time) managed to get through a set of pads in less than one year and about 9k miles. He was the last of the late brakers though!

Car not had oil changed in 5 years / 60,000 miles. - Bolt

You can tell at a glance how a vehicle is driven simply by looking at the front wheels, covered in thick ingrained brake dust equals driven poorly, on the brakes.

Indeed - another former colleague of mine (who was quite young at the time) managed to get through a set of pads in less than one year and about 9k miles. He was the last of the late brakers though!

you cant if you live and drive around town, I can understand that statement in rural areas where there is time to use gears to slow down, but in town you cant, also the pads of today dust more easily than the asbestos pads of years ago so smother the wheels quicker

I get through front pads in around 15k and rears around 25k miles, not far away from my tyre wear but I don't drive mad, certainly have a problem doing that where I am, but as fast as I clean my motor the front wheels are back to dust in a couple of days

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< the pads of today dust more easily than the asbestos pads of years ago so smother the wheels quicker >>

Today's front wheels quickly start to look dark brown, because the gunge they collect contains more disc material (cast iron) than they used to - which naturally starts to look rusty in the wet. And take some effort to remove properly.

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

Next time you're out and about, note the car still doing often well in excess of 50mph charging up to every junction leaving braking, heavily, to the very last second in order to gain a few yards.

I'm doing 53 most of the time in the lorry, the number of cars who undertake me at high and increasing speed as they take the deceleration lane, often to a downhill motorway junction slip road is amazing, no doubt angered that they had to brake hard from 80+ to that 53 because they were unable to cut said lorry up and get onto the slip road at the last moment for some reason before he passed the point of their no chance, no off pedal momentum whatsoever, going from acceleration to immediate hard braking, gained what? 2 or 3 seconds at most.

by the way this isn't just cars, lots of people behind the wheel of lorries are no better, but you seldom see this type of aggressive driving from coaches carrying passengers, odd that

I can absolutely guarantee in almost all of these cases if the vehicle has to come to a hard halt, which they usually do because such driving lack of skill often goes hand in hand with being unable to make smooth flowing progress without actually stopping at all, that the front wheels will be covered in thick brake dust.

Strange how some of us can make our daily commutes, reaching high speeds when appropriate, journey times just as quick but infinitely more comfortable for weeks on end and not have this wheel discolouration problem.

Most drivers don't even know they are doing this, watch the heads of their passengers rocking forwards and backwards to the violence of the drive, i'd not want to be driven by them.

Edited by gordonbennet on 18/09/2019 at 11:40

Car not had oil changed in 5 years / 60,000 miles. - alan1302

I get through front pads in around 15k and rears around 25k miles, not far away from my tyre wear but I don't drive mad, certainly have a problem doing that where I am, but as fast as I clean my motor the front wheels are back to dust in a couple of days

Is it a heavy car? 15,0000 miles on a set of pads seems extreme.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

I get through front pads in around 15k and rears around 25k miles, not far away from my tyre wear but I don't drive mad, certainly have a problem doing that where I am, but as fast as I clean my motor the front wheels are back to dust in a couple of days

Is it a heavy car? 15,0000 miles on a set of pads seems extreme.

Not where I live it isn't, 2016 Civic estate, bought new -but all my cars were the same, that's town driving for you, I know 2 other owners of the tourer, both do motorway driving to work and they last double the miles to mine, tyres last longer as well.

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

Bolt, have those brake calipers been serviced since new?, i don't mean the dealer's laughable idea either, ie peering at them and squirting brake cleaner about, i mean proper stripping and lubing up, wouldn't be at all surprised if the pads are not pulling away from the discs as well as they should.

Even my daughter gets better mileage on both her Civic's brakes, even her flying type R horrid thing, and she drives like the devil himself.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Bolt, have those brake calipers been serviced since new?, i don't mean the dealer's laughable idea either, ie peering at them and squirting brake cleaner about, i mean proper stripping and lubing up, wouldn't be at all surprised if the pads are not pulling away from the discs as well as they should.

Even my daughter gets better mileage on both her Civic's brakes, even her flying type R horrid thing, and she drives like the devil himself.

GB, I get my mate to do that every year if not before under my supervision(though I don't tell him that) as I know sometimes the Honda calipers do stick sometimes, I used to do it myself like most work on the car but cant bend down now without struggling to get up

he does know what he's doing and is the only one I trust apart from one garage about 5 miles from me who will be doing my servicing from January, 5 year servicing free ends then from Honda, but even Honda are better than I thought they would be and I watch them like a hawk

I forgot to mention I don't use the gears to slow on the many hills around my area I use the brakes on and off to help keep the discs cool and apart from pad wear I haven't as yet had any problems so far

I`ve never liked using the gears to slow down so use brakes instead, full of bad habits I am but never mind...

Edited by bolt on 18/09/2019 at 17:04

Car not had oil changed in 5 years / 60,000 miles. - Lrac

I had a car serviced at a main dealer because it was under warranty. The car was a 108 and a brief check revealed that it had a Toyota oil filter. I appreciate that the oil filter fitted from new is a Toyota one for obvious reasons but contrary to the opinion of others every time that I have brought oil filters from the main dealers (I have more than one Peugeot with this engine) the box has always contained a filter marked in the Peugeot / Citroen livery and never Toyota. The dealership in question (now Skoda) did not have any Toyota franchises in its network so I am not 100% convinced that the filter was changed. The oil was clean when presented to the garage and clean in appearance when I collected the car.

As an aside the next time that the car was serviced also at a main dealer I was advised about the moisture content of the brake fluid. Strange as I had been given an assurance that this had also been replaced at my request.

Wonder how many people are driving around under the misplaced assumption that their oil has been replaced.

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

GB, I get my mate to do that every year if not before under my supervision(though I don't tell him that) as I know sometimes the Honda calipers do stick sometimes, I used to do it myself like most work on the car but cant bend down now without struggling to get up

he does know what he's doing and is the only one I trust apart from one garage about 5 miles from me who will be doing my servicing from January, 5 year servicing free ends then from Honda, but even Honda are better than I thought they would be and I watch them like a hawk

Glad you get the brakes serviced properly, just out of interest for the next time you change pads or discs i've been experimenting with Brembo pads and discs (usually found at ECP when they have a sale on at very good prices) on the family fleet, not only are they proving to have a lovely progressive feel to the brakes, like Ferodos of yore if you recall, but

on the family Aygo which has always covered the same sort of mileage and usage where it previously ate through the Toyota items, since i fitted Brembos they are lasting much much longer (i bought a spare set of pads in a sale two years ago expecting the standard wear rate, but they just aren't wearing out like the OE materials), both pads and discs, same results on my Landcruiser which is at the complete opposite end of the spectrum, the effortless stopping power now is quite an eye opener, might be a thought for you when the time comes.

To be fair this isn't the first time i've made improvements to OE spec on the brakes, my previous Hilux the brakes were nowt to write home about on OE Sumitomo pads, fitted MIntex which was all i could get at the time cos new model made a noticeable improvement.

which examples pale compared to the outlaws Golf mk2 Diesel when it was still almost new, you had to be Charles Atlas to stop (or steer) the thing, OE pads would not wear but were ripping the discs to shreds, i fitted Ferodos to the front which changed the car completely, lovely soft pedal and good stopping needing probably half the previous pedal pressure, but it imbalanced the brakes making it prone to locking the front wheels, so had to fit the corresponding Ferodo rear shoes to make it right, made the car a much nicer drive overall for the MiL of the day, for the steering it was a case of upping the front tyres by nearly 10psi because she could barely steer the thing at all, power steering being rare in 1984 build hatchbacks.

tell me about the aches and pains surrounding getting up, a while ago i invested in some gel knee pads which has helped, but i spent a couple of hours under the LC on Sunday, i think, topping up the rustproofing with ACF50 for the coming winter, spray painting the exhaust with zinc etc, could barely stand afterwards, getting old is such fun :-)

glad you have lots of bad habits, me too...or has me too been patented by some group or other ?

Edited by gordonbennet on 18/09/2019 at 17:27

Car not had oil changed in 5 years / 60,000 miles. - badbusdriver

GB, i was under the impression that the reason MK2 Golf (and probably MK1 aswell) brakes required so much force to operate is that they were not servo assisted.

I`ve never liked using the gears to slow down so use brakes instead, full of bad habits I am but never mind...

I'm not sure this would qualify as a 'bad habit', i believe driving instructors these days do not advocate even changing down till you come to a stop, never mind using the gears. Correctly pointing out that replacing brakes and brake components cost a lot less than replacing a gearbox!. Having said that, i do think that new drivers should be taught how to slow the car down using the brakes too. Even if the practice is only used coming down a hill on icy roads, it could potentially save lives!.

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

GB, i was under the impression that the reason MK2 Golf (and probably MK1 aswell) brakes required so much force to operate is that they were not servo assisted.

I'm not sure this would qualify as a 'bad habit', i believe driving instructors these days do not advocate even changing down till you come to a stop, never mind using the gears. Correctly pointing out that replacing brakes and brake components cost a lot less than replacing a gearbox!. Having said that, i do think that new drivers should be taught how to slow the car down using the brakes too. Even if the practice is only used coming down a hill on icy roads, it could potentially save lives!.

Quite likely, but can't recall for sure, being a Diesel it would have had a vacuum pump anyway, which my square Granada of the same year manufacture sported....just out of interest it had the same pads as the GTi on the Diesel mk2 but with solid discs where the GTi had vented.

I wasn't advocating drivers of cars should adopt proper lorry/bus driving techniques of using gears and auxilliary, whether engine or exhaust and/or purpose made retarder, just this increasing practice of accelerating right up till the last second requiring heavy braking will not only shorten brake life considerably but does not aid progress other than to make it non flowing and very uncomfortable.

The reason i raised this was the disbelief voiced over any supposed claim of extra long brake life, that i dispute because the difference i've seen over the years in my work has shown me that 4 or more times the accepted life of such things can be gained, same as the life and economy of vehicles as whole.

Driving instructors have one job only, to get their pupils through the most basic of tests via robotic driving, after the test is passed people start to learn to drive competently.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< I do think that new drivers should be taught how to slow the car down using the brakes too. >>

They should also be taught that a car will slow down gradually by itself if you just lift off the accelerator. As long as nothing sudden happens, and you keep a sensible distance from the vehicle in front, you will probably be able to get along with only gears and throttle - maybe even negotiating roundabouts if they aren't too crowded.

Many years ago (about 30 I think) I was driving a pool car (Pug 309) which I soon realised was nearly through the pad material to the metal backing. I drove about 100 miles home almost without touching the brakes.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I don't do engine braking (apart from on long hill descents), but I'm not hard on brakes either, and I've never done very high miles.

In Scotland, this meant that I often had to replace the brake disks for successive MOT's, due to "visble rust", so it's not clear to me that I'd get any benefit from being even easier on the brakes.

I also doubt I'd get any benefit from "higher performance" brake components. Every car I've had has apparently been capable of locking up its wheels when emergency braking, at any speed that I had the nerve to test it at, and presumably well beyond.

Wheel lock seems to be as much brake force as you can use.

I understand performance brakes resist heat better, but that is really only relevant in sustained hard use.

Car not had oil changed in 5 years / 60,000 miles. - corax
tell me about the aches and pains surrounding getting up, a while ago i invested in some gel knee pads which has helped, but i spent a couple of hours under the LC on Sunday, i think, topping up the rustproofing with ACF50 for the coming winter, spray painting the exhaust with zinc etc, could barely stand afterwards, getting old is such fun :-)

I know a grizzled lorry driver probably doesn't want to hear this and the above goes with your job but try some yoga stretching moves. I've had muscle imbalance for some years due to repetitive strain injuries which results in stiffness and weakness on one side, and the stretching and strengthening exercises keep me going. But only the easiest and basic moves to start with.

Car not had oil changed in 5 years / 60,000 miles. - madf
tell me about the aches and pains surrounding getting up, a while ago i invested in some gel knee pads which has helped, but i spent a couple of hours under the LC on Sunday, i think, topping up the rustproofing with ACF50 for the coming winter, spray painting the exhaust with zinc etc, could barely stand afterwards, getting old is such fun :-)

I know a grizzled lorry driver probably doesn't want to hear this and the above goes with your job but try some yoga stretching moves. I've had muscle imbalance for some years due to repetitive strain injuries which results in stiffness and weakness on one side, and the stretching and strengthening exercises keep me going. But only the easiest and basic moves to start with.

+1 for yoga..

I started daily yoga exercises ## about 5 years ago (on top of two x 1hour sessions) and healed my sciatica (I used to cry with pain getting out of bed in the mornings). Only very mild attacks now.

And still do car maintenance and carry beehives and garden and go up ladders to paint windows..and I won't see 70 again..

## six days a week. adter getting up. It's a struggle some mornings but it has made my back far more flexible and stronger .I used to weighlift 50 years ago and my lower spinal discs were partially fused and I was very stiff- not now..

Car not had oil changed in 5 years / 60,000 miles. - gordonbennet

Thankyou chaps, something i shall have a look at, my joint damage is mainly the result of 20 years on car transporters, thankfully out that game for some 10/11 years now, scrabbling round especially during the last few years on hands and knees on hard stamped-for-grip knee unfriendly steel decks chocking and strapping wheels.

Edited by gordonbennet on 20/09/2019 at 11:09

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

I was just rereading this thread and thought I'd give another update. I *still* haven't changed the spark plugs or the filters (so that's six years without, must get on that quickly) and haven't changed the oil since I started this thread over a year ago. I know that's stupid but I'm just an expert in procrastination. Anyway, I've done 12 thousand miles in it since I bought it and the only expense has been new tyres and a new clutch a few months ago.

Of course I know I've been very lucky here and I wouldn't recommend that kind of neglect on any car for anyone else.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

Thanks for the update

Did you ever get a look inside the rocker cover? A link to a picture would be of interest.

I wouldn't worry much about changing the plugs or the oil "quickly".

Air filters are typically changed WAY before they are likely to affect performance so I wouldn't worry about that much either.

However, given the cars history I'm quite surprised you didn't change its oil filter when you got it, if I'm understanding you correctly. Might be OK, but it might be clogged and in bypass.

It might be possible to tell by monitoring its temperature (if in bypass it wont get so hot) but I've never tried.

I'd give changing the brake fluid priority over all the above.

Old brake fluid is, IMO, quite a lot more likely to cost you money, and it could cost you much more.

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

I did change the oil as soon as I got it, I meant I haven't changed it since then. Thanks for the tip re brake oil, I'll take the rocker cover off and take a pic tomorrow.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I did change the oil as soon as I got it, I meant I haven't changed it since then. Thanks for the tip re brake oil, I'll take the rocker cover off and take a pic tomorrow.

Yeh, I got that. So the oil has done 12K. This may not be wildly over the OEM recommended interval (what is it, BTW?), but then I don't put much store in OEM recommendations anyway .

Given the vehicles history I wouldn't personally have chosen to go 12K on its first OCI after girlcare, but probably not a big deal.

OTOH, IF I understood you correctly, you didn't change the oil filter when you got it, so its done 72K.

That's quite a lot.

Oh, and try not to call brake fluid "brake oil". While some Citroens do use brake oil, just about everything else...er...doesn't

Edited by edlithgow on 22/11/2020 at 10:17

Car not had oil changed in 5 years / 60,000 miles. - John F

Anyway, I've done 12 thousand miles in it since I bought it and the only expense has been new tyres and a new clutch a few months ago.

Even I would change the oil and filter asap after 12K miles. Plugs are usually good for 50K or more (if you change them keep the OK old ones in case you ever need to check plugs in future by substituting ones you know work) and the air filter just needs cleaning with a small stiff paint brush.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

Of course I know I've been very lucky here and I wouldn't recommend that kind of neglect on any car for anyone else.

I think you are just pushing your luck to see how far it will go. I refuse to believe you have never had time, money or inclination to carry out some basic essentials. Just keep it going until it finally refuses, like an old horse ?

Car not had oil changed in 5 years / 60,000 miles. - Engineer Andy

Of course I know I've been very lucky here and I wouldn't recommend that kind of neglect on any car for anyone else.

I think you are just pushing your luck to see how far it will go. I refuse to believe you have never had time, money or inclination to carry out some basic essentials. Just keep it going until it finally refuses, like an old horse ?

Well, at least he'd then have something to use to tarmac his driveway.

Car not had oil changed in 5 years / 60,000 miles. - barney100

I know a bloke with a Mazda mx5, he's had it 14 years and besides the MOT it's had nothing done...zilch, nada. He dosen't do much mileage,

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

So this car is still going... I wouldn't say strong as I've documented some of the thousands of £££ I've spent on it to keep it running in threads here...but it's still going. Still not changed the oil since the first week I bought it, though on my last MOT it was running low so the garage topped it up.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

I've documented some of the thousands of £££ I've spent on it to keep it running in threads here...but it's still going. Still not changed the oil since the first week ...

If you have spent 'thousands of £££' on it, I can't see the point of not spending one or two £ on some oil and a filter .....

Car not had oil changed in 5 years / 60,000 miles. - Bolt

I've documented some of the thousands of £££ I've spent on it to keep it running in threads here...but it's still going. Still not changed the oil since the first week ...

If you have spent 'thousands of £££' on it, I can't see the point of not spending one or two £ on some oil and a filter .....

Might not be worth changing the oil if left too long, as it could free off congealed old oil and block the oilways and seize the engine... owners choice and cannot complain if it happens

Car not had oil changed in 5 years / 60,000 miles. - OceanMan

I've documented some of the thousands of £££ I've spent on it to keep it running in threads here...but it's still going. Still not changed the oil since the first week ...

If you have spent 'thousands of £££' on it, I can't see the point of not spending one or two £ on some oil and a filter .....

Might not be worth changing the oil if left too long, as it could free off congealed old oil and block the oilways and seize the engine... owners choice and cannot complain if it happens

Well this is a spanner in the works. I actually bumped this thread after buying some oil + a filter because I was planning on doing a quick change myself and now I'm scared to do so. Just to be clear changed the oil on this car when I bought it nearly three years ago. Before then it hadn't been changed in five years. Should I change it again or not?

Owning a car is stressful!

Car not had oil changed in 5 years / 60,000 miles. - barney100

Bloke I know has an old MX5, he hasn't done anything to it except top the oil up in 15 years. How it gets through the MOT is anyones guess.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Bloke I know has an old MX5, he hasn't done anything to it except top the oil up in 15 years. How it gets through the MOT is anyones guess.

its strange how some people can get away with doing very little to a car and never have a problem, most that do it end up with seized engines which I have seen a lot over the years because people have no interest in them and just drive till they drop just like my sil who has no interest in the car at all....

Car not had oil changed in 5 years / 60,000 miles. - Steveieb

When i worked overseas at a BBC world service relay station the five Paxman Diesel engines produced 1MW of power.

And the oil changes on these huge engines were massive . So the chief mechanical engineers ordered an oil testing kit from Shell.

The oil was regularly tested and found to be good for over twice the length of running hours specified by Paxman.

Car not had oil changed in 5 years / 60,000 miles. - focussed

When i worked overseas at a BBC world service relay station the five Paxman Diesel engines produced 1MW of power.

And the oil changes on these huge engines were massive . So the chief mechanical engineers ordered an oil testing kit from Shell.

The oil was regularly tested and found to be good for over twice the length of running hours specified by Paxman.

Most probably as a result of Paxman's being a good old solid design, which had oli change intervals specified using the lubricants available at the time the units were manufactured. Later on in the engine's life, oil technology improved enabling longer oil change intervals.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

Bloke I know has an old MX5, he hasn't done anything to it except top the oil up in 15 years. How it gets through the MOT is anyones guess.

its strange how some people can get away with doing very little to a car and never have a problem, most that do it end up with seized engines which I have seen a lot over the years because people have no interest in them and just drive till they drop just like my sil who has no interest in the car at all....

I’d say the above example isn’t especially strange if, as was stated, the car did low miles. Somewhere up above I link to pictures of my engine after 6 years on old fashioned mineral oil and it was (and is) significantly shinier than when I bought it. That you can get away with doubling or trebling this on synthetic oil isn’t terribly surprising. This tends to contradict the standard “must change every year irrespective of mileage” manufacturers advice, but, like manufacturers shelf life recommendations, this is inherently implausible.
Car not had oil changed in 5 years / 60,000 miles. - Bolt

This tends to contradict the standard “must change every year irrespective of mileage” manufacturers advice,

Think you will find its recommended rather than a must, not forgetting modern engines have oils made specifically for them for emission's reasons and should be changed earlier than recommended

As I have worked on so many engines that have not had regular oil/filter changes and on those that have, you can tell what has and what hasn`t, in most cases the ones that have are quieter than those not having regular changes, the wear is different on them, so is the look of the oil in some or most neglected engines its congealed oil....

but if anyone wishes to contradict what the manufacturer specifies that is up to them but is specified for a reason, in most cases IMO some changes are far too long between changes. again imo

Edited by Bolt on 03/11/2022 at 06:55

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

This tends to contradict the standard “must change every year irrespective of mileage” manufacturers advice,

but if anyone wishes to contradict what the manufacturer specifies that is up to them but is specified for a reason, in most cases IMO some changes are far too long between changes. again imo

My objection was/is to the mileage independent time limit, usually one year, which a moments reflection shows is simply unbelievable. If it’s “There for a reason”, that reason is probably CYA laziness, since it cannot make any sense. Consider that a typical recommended OCI is 10000 miles OR 1 year. The limit low mileage is no mileage, equivalent to shelf life recommendations which are also often 1 year. So an oil can do 10000 miles in the hostile environment of an operating engine, but a year resting in the engine or in the bottle is game over? This is not really a matter of opinion. This is simply Transparent t***.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

This tends to contradict the standard “must change every year irrespective of mileage” manufacturers advice,

but if anyone wishes to contradict what the manufacturer specifies that is up to them but is specified for a reason, in most cases IMO some changes are far too long between changes. again imo

My objection was/is to the mileage independent time limit, usually one year, which a moments reflection shows is simply unbelievable. If it’s “There for a reason”, that reason is probably CYA laziness, since it cannot make any sense. Consider that a typical recommended OCI is 10000 miles OR 1 year. The limit low mileage is no mileage, equivalent to shelf life recommendations which are also often 1 year. So an oil can do 10000 miles in the hostile environment of an operating engine, but a year resting in the engine or in the bottle is game over? This is not really a matter of opinion. This is simply Transparent t***.

Where does it say there is an oil shelf life of 1 year?, as I don`t recall seeing one, usually, or was depending on OEM 5 to 8 years depending on how its stored

ie in a sump after it has been poured into the sump it will have picked up all the previous oils dirt/acids and grime that is in it and mix as it goes in, its then contaminated, and as time goes on condensation is added to the mix so that is not the same as the oil being in a sealed container

This is not really a matter of opinion.

what that oil changes can be too far apart mileage and time wise.

In my case I change oil and filter, sorry a garage does it between 5k and 6k miles, about the same in months imo all cars should be done like that and might assist some cars engines last longer

Car not had oil changed in 5 years / 60,000 miles. - madf

www.youtube.com/watch?v=euHNdH-9zOM

They Never Changed the Engine Oil Once Since Car Was New
Car not had oil changed in 5 years / 60,000 miles. - Bolt

www.youtube.com/watch?v=euHNdH-9zOM

They Never Changed the Engine Oil Once Since Car Was New

There are bound to be some that don`t have it done, just makes you more careful when buying a second hand car, especially now a lot cannot afford to, or just don`t want to....probably both I expect

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< ... as time goes on condensation is added to the mix ... >>

Using Ed's lower limit of zero miles per year, I don't accept that any significant condensation will occur in the sump of an unused engine. OTOH if such a car is used for occasional short trips, the sump oil could get quite damp.

Car not had oil changed in 5 years / 60,000 miles. - bathtub tom

<< ... as time goes on condensation is added to the mix ... >>

I don't accept that any significant condensation will occur in the sump of an unused engine.

As the temperature rises and falls so air (and water vapour) will be drawn into and out of the engine. A similar action occurs in master cylinders as brake/clutch wear.

Car not had oil changed in 5 years / 60,000 miles. - bathtub tom

We had a 'family' Fiat 127. Bought as a second car for my daughters to use. I looked after it and even changed the oil pump and shells when one had an oil light experience. Fortunately, I'd drilled into them the importance of warning lights and they stopped the engine immediately and the crank didn't suffer.

Many years later it was seen advertised for sale and I went to have a look at it. I suspect the oil (treacle) had never been changed or topped up many times. It rattled like a good-un!

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

<< ... as time goes on condensation is added to the mix ... >>

I don't accept that any significant condensation will occur in the sump of an unused engine.

As the temperature rises and falls so air (and water vapour) will be drawn into and out of the engine. A similar action occurs in master cylinders as brake/clutch wear.

Seems likely that some condensation could get in the engine, if the temperature falls below the dew point. Probably more likely in the UK than in Taiwan.

Its also true that fresh oil in an idle engine will be contaminated with residual used oil, but the same applies to an engine that goes on to do the approved 10000 miles, where any catalytic effect of these contaminants will be much much greater.

Re "A similar action occurs in master cylinders as brake/clutch wear." no it doesn't, because (a) brake/clutch wear conventionally refers to the friction material, which isn't directly affected by fluid deterioration, and (b) most brake fluid is hygroscopic, so it absorbs atmospheric water vapour. Motor oil isn't, and doesn't.

Edited by edlithgow on 05/11/2022 at 18:55

Car not had oil changed in 5 years / 60,000 miles. - bathtub tom

Re "A similar action occurs in master cylinders as brake/clutch wear." no it doesn't, because (a) brake/clutch wear conventionally refers to the friction material, which isn't directly affected by fluid deterioration, and (b) most brake fluid is hygroscopic, so it absorbs atmospheric water vapour. Motor oil isn't, and doesn't.

As the friction material wears, so the fluid level in the relevant master cylinder drops. Air is drawn in. As you say, "most brake fluid is hygroscopic". A reason it should be changed periodically.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

This tends to contradict the standard “must change every year irrespective of mileage” manufacturers advice,

but if anyone wishes to contradict what the manufacturer specifies that is up to them but is specified for a reason, in most cases IMO some changes are far too long between changes. again imo

My objection was/is to the mileage independent time limit, usually one year, which a moments reflection shows is simply unbelievable. If it’s “There for a reason”, that reason is probably CYA laziness, since it cannot make any sense. Consider that a typical recommended OCI is 10000 miles OR 1 year. The limit low mileage is no mileage, equivalent to shelf life recommendations which are also often 1 year. So an oil can do 10000 miles in the hostile environment of an operating engine, but a year resting in the engine or in the bottle is game over? This is not really a matter of opinion. This is simply Transparent t***.

Where does it say there is an oil shelf life of 1 year?, as I don`t recall seeing one, usually, or was depending on OEM 5 to 8 years depending on how its stored

Here

http://www.machinerylubrication.com/Read/172/lubricant-storage-life

It was originally titled "Lubricant Storage Life Limits - Industry Needs a Standard " but if you read it you might reasonably have concluded that "industry doesn't need a standard", since they didn't appear to have one, nor any basis for one.

They poll a few (anonymous) manufacturers for shelf-life recommendations

I used it as a shining example of manufacturer mendacity in various forum posts maybe starting about 10 years ago.

Over the years it seems to have been toned-down a bit, the title having changed to Lubricant Storage Life Limits - What is the Standard?, and some more plausible-length 5 year shelf lifes introduced as "general recommendations", but most of the original t*** remains, producing even more inconsistency.

By the time they get the story straight automotive motor oil itself will be largely outdated.

Like most "pitches", what it didn't say was as significant as what it did. There was, and is, absolutely no data reported for on-shelf deterioration of motor oils. Instead, it was served up as a ready-cooked "given" with a side order of "The sky is falling" Chicken-Little panic salad.

Table 4 (recommended shelf life for indoor storage at 20C) remains especially instructive, as is its conflict with table 3 .

Major oil company C: 10-30W Motor Oil (mineral) 1 YEAR

Major oil company C: 10-30W Motor Oil (PAO) 1 YEAR:

Major oil company D: 10-30W Motor Oil (mineral) 1 YEAR

Major oil company D: 10-30W Motor Oil (PAO) 1 YEAR:

Independant oil company A: 10-30W Motor Oil (mineral) Infinite

Independant oil company A: 10-30W Motor Oil (PAO) : Infinite

Independant oil company B: 10-30W Motor Oil (mineral) : 10 years/virtually indefinite

Independant oil company B: 10-30W Motor Oil (PAO) : 10years/virtually indefinite

1 year (!) isn’t very long, and 1 year to infinity is a pretty wide range.

Its also interesting that, according to the majors, PAO synthetic oil, plausibly believed to be much more stable in an engine, is just as incredibly fragile on the shelf as mineral oil.

Phooey.

Edited by edlithgow on 05/11/2022 at 18:40

Car not had oil changed in 5 years / 60,000 miles. - John F

I can't see any reason why engine oil in what is effectively a sealed container should not have the same shelf life as Scotch whisky...i.e.indefinite.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I can't see any reason why engine oil in what is effectively a sealed container should not have the same shelf life as Scotch whisky...i.e.indefinite.

Perhaps not a very good analogy, since a plastic oil bottle probably does do some very slow gas and vapour exchange with the atmosphere, and so is maybe more analogous to a whisky cask (where change certainly does occur) than to a whisky bottle. But, unlike Scotch, motor oil is has had a few million years to get used to its structure and / or has been formulated or synthesised for high temperature stability, so it isn’t an issue.
Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

I can't see any reason why engine oil in what is effectively a sealed container should not have the same shelf life as Scotch whisky...i.e.indefinite.

As a chemist, I don't think it matters whether a little moisture accumulates in the sump of an unused engine. The only route is by ambient warming and cooling, which will be happening a good deal more in the fuel tank and brake fluid cylinders. What does affect oil with use is contamination by combustion products (often rather acidic) and physical 'chewing' by the metal parts in close hot contact. Traces of damp are unimportant - to the oil, anyway.

Car not had oil changed in 5 years / 60,000 miles. - John F

I can't see any reason why engine oil in what is effectively a sealed container should not have the same shelf life as Scotch whisky...i.e.indefinite.

As a chemist, I don't think it matters whether a little moisture accumulates in the sump of an unused engine. ......... Traces of damp are unimportant - to the oil, anyway.....

............as long as they don't contain oleophilic bacteria. Some here will probably remember the appalling stink when following ancient rarely driven cars. Their sumps contained a sludge of lukewarm wet old oil being degraded by microorganisms.

Car not had oil changed in 5 years / 60,000 miles. - bathtub tom

I can't see any reason why engine oil in what is effectively a sealed container should not have the same shelf life as Scotch whisky...i.e.indefinite.

............as long as they don't contain oleophilic bacteria. Some here will probably remember the appalling stink when following ancient rarely driven cars. Their sumps contained a sludge of lukewarm wet old oil being degraded by microorganisms.

The sump's hardly a sealed container.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I can't see any reason why engine oil in what is effectively a sealed container should not have the same shelf life as Scotch whisky...i.e.indefinite.

As a chemist, I don't think it matters whether a little moisture accumulates in the sump of an unused engine. ......... Traces of damp are unimportant - to the oil, anyway.....

............as long as they don't contain oleophilic bacteria. Some here will probably remember the appalling stink when following ancient rarely driven cars. Their sumps contained a sludge of lukewarm wet old oil being degraded by microorganisms.

Dunno about this. Its certainly known to happen to merchant ships, so it would seem to be a possibility in cars, but a quick Google didn't find any reference to it.

This is odd when you consider that a merchant ship in service probably doesn't spend much time engine off.

OTOH perhaps there are more avenues for water contamination in a big marine diesel, and perhaps the bulk oil temperature when the engine is running is lower.

OTOOH it could just be because "ancient rarely driven cars" are of zero commercial interest so microbial oil breakdown has never been documented.

IF it was an issue I've seen mention of breathers with a dessicant trap, which, along with avoiding short-tripping, could probably address it.

Car not had oil changed in 5 years / 60,000 miles. - Andrew-T

<< perhaps there are more avenues for water contamination in a big marine diesel, and perhaps the bulk oil temperature when the engine is running is lower. >>

Anyone know how often a large marine engine gets an oil change ?

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

<< perhaps there are more avenues for water contamination in a big marine diesel, and perhaps the bulk oil temperature when the engine is running is lower. >>

Anyone know how often a large marine engine gets an oil change ?

Dunno, good question.

This site

mvdirona.com/2016/01/oil-change-at-sea/

reckons 250 hours in a common recommendation, but thats a high speed diesel on a trawler yacht, and more like a truck engine than a big merchant ship engine.

Looks like there might be some info here

shipinsight.com/articles/an-overview-of-engine-lub...s

but the site is down. Perhaps overdue for an oil change.

4WIW, when I was working in Leith drydock doing a post-Falklands cut-and-shut stretch to a P&O ferry (long range bunkers, reinforced car decks) I used to take a shortcut through the engine room, where an engineer was doing a decoke standing inside the cylinders. That engine had what looked like big inline centrifugal oil cleaners. That would likely remove most water and wear debris, and allow extended oil change intervals.

I'd think, given the cost of an oil change, they might base it on oil analysis rather than a potentially wasteful rule-of-thumb.

Car not had oil changed in 5 years / 60,000 miles. - Bolt

Its also interesting that, according to the majors, PAO synthetic oil, plausibly believed to be much more stable in an engine, is just as incredibly fragile on the shelf as mineral oil.

Phooey.

not really thought about it as everyone works on what they`ve learned over the years and wonder how many actually read articles like that, not even sure if anyone would take any notice anyway as experience tells you different

though some think oil lasts for life in the sump or even have no idea its there in the first place so leave the engine until it either doesn`t start or seizes up, you also get those that think the engine is fully sealed, but isn`t as it has a breather, the compression passes the rings and the combustion gases passing the rings cause acids in the oil but no point in explaining to people as they really have no idea what your talking about or don`t care....imo both

the other point is, some do as they please anyway having there own belief in what happens to oil in the sump, whether correct or not.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow
I would think most people trust the manufacturers.. Hence they can get away with this kind of nonsense.
Car not had oil changed in 5 years / 60,000 miles. - edlithgow
I wonder if the cars that have an on-board engine oil life monitor, which adjust the OCI according to usage pattern, (short tripping shortens the oil life)also enforce the 1 year maximum?

Maybe it isn’t still a thing?

You could probably get a bit more sophisticated using some kind of curve of mileage against oil life. With oil life on the Y-axis and mileage on the X. I would expect a fairly flat long life at low mileage, steepening to one year as you approach, say 10000 miles.

Should be possible in principle to build a GPS-enabled smartphone app with some of the functionality of an on-board oil life monitor
Car not had oil changed in 5 years / 60,000 miles. - RT
I wonder if the cars that have an on-board engine oil life monitor, which adjust the OCI according to usage pattern, (short tripping shortens the oil life)also enforce the 1 year maximum? Maybe it isn’t still a thing? You could probably get a bit more sophisticated using some kind of curve of mileage against oil life. With oil life on the Y-axis and mileage on the X. I would expect a fairly flat long life at low mileage, steepening to one year as you approach, say 10000 miles. Should be possible in principle to build a GPS-enabled smartphone app with some of the functionality of an on-board oil life monitor

No they don't - at least my VW Touareg doesn't - the time element decreases day-by-day even if the car isn't used for months at a time, eg during Covid lockdown.

Car not had oil changed in 5 years / 60,000 miles. - edlithgow

I wonder if the cars that have an on-board engine oil life monitor, which adjust the OCI according to usage pattern, (short tripping shortens the oil life)also enforce the 1 year maximum? Maybe it isn’t still a thing? You could probably get a bit more sophisticated using some kind of curve of mileage against oil life. With oil life on the Y-axis and mileage on the X. I would expect a fairly flat long life at low mileage, steepening to one year as you approach, say 10000 miles. Should be possible in principle to build a GPS-enabled smartphone app with some of the functionality of an on-board oil life monitor

No they don't - at least my VW Touareg doesn't - the time element decreases day-by-day even if the car isn't used for months at a time, eg during Covid lockdown.

Then I think you mean "Yes they do", as in they "also enforce the one year maximum".

Not especially surprising, but there was at least a possibility that the algorithm made more sense than the corporate CYA rule of thumb

Car not had oil changed in 5 years / 60,000 miles. - John F

I doubt if a 5yr interval is unusual for infrequently driven cars of older drivers. Modern engines are small, virtually airtight, and contain only a few litres of oil which heat up quickly, eliminating moisture and microorganisms. My TR7 has had only four oil changes since 1993, every 6000 miles or less, and is none the worse for it. The EP90 in the diff is original.