nemo - Advice please on oil filter and air filters

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Sun 24 Jul 2022 17:00
nemo - Advice please on oil filter and air filters - chewit

Hi

Getting a citroen nemo

Looking on eurocarparts and others

But cannot work out if its wise spending more on filters

Going to be going max 4k miles a year

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Sun 24 Jul 2022 17:45
nemo - Advice please on oil filter and air filters - badbusdriver

How much more is the dearer filters than the cheaper?.

But assuming this is a diesel (as there are way more of them than petrol), I'd be looking which is the best filter at doing its job rather than necessarily price.

TBH, I'd probably do the same if it was a petrol, but probably not that important as the petrol engine is a fairly simple device.

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Sun 24 Jul 2022 17:52
nemo - Advice please on oil filter and air filters - chewit

CROSSLAND

BOSCH

MANN

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Sun 24 Jul 2022 18:03
nemo - Advice please on oil filter and air filters - elekie&a/c doctor
Can’t go wrong with Bosch or Mann. Crossland , coopers are the lowest of the low , quality wise .
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Sun 24 Jul 2022 22:24
nemo - Advice please on oil filter and air filters - Manatee

I buy the genuine spares or Bosch/Mann.

Unless things have changed again in the last few years Crosland is a brand owned by Euro Car Parts who do not manufacture. Might be OK, might not. I wouldn't.


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Mon 25 Jul 2022 06:23
nemo - Advice please on oil filter and air filters - paul 1963

Blue print make reasonable filters if on a budget but in realty for the cost difference your really best off buying genuine IMHO.

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Mon 25 Jul 2022 11:14
nemo - Advice please on oil filter and air filters - Steveieb

I was advised on HJ only to use genuine oil filters for my Corolla Verso.

Is there any reason for this or would pattern parts except Coopers be ok?

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Mon 25 Jul 2022 21:37
nemo - Advice please on oil filter and air filters - Ian D
Mann and Mahle are OE (Original Equipment) suppliers to several manufacturers, just changed the oil and filter on my 2016 BMW main dealer serviced 118i and the BMW filter I removed had BMW and Mahle stamped on it, and the Mann filter I bought was identical in every respect to the BMW/Mahle oil filter, in fact both the BMW/Mahle and Mann filters both had ‘Made in Austria’ written on them, so both Mahle and Mann are good enough for me. Would avoid the other makes mentioned in this thread…
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Mon 25 Jul 2022 22:53
nemo - Advice please on oil filter and air filters - bathtub tom

Just replaced the air filter in my Yaris with a Mahle. It seemed to be a little larger than the original and resulted in the car rolling off the ramps as I tried to fit the housing (my fault for not applying th handbrke).

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Wed 27 Jul 2022 19:23
nemo - Advice please on oil filter and air filters - chewit

Thanks folks might ring the local dealer up

Mahle Knecht Air Filter these are the most expensive £10.44 from ECP

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Tue 26 Jul 2022 03:00
nemo - Advice please on oil filter and air filters - edlithgow

How much more is the dearer filters than the cheaper?.

But assuming this is a diesel (as there are way more of them than petrol), I'd be looking which is the best filter at doing its job rather than necessarily price.

TBH, I'd probably do the same if it was a petrol, but probably not that important as the petrol engine is a fairly simple device.

How would simplicity in the engine reduce its need for efficient air filtration?

I suppose it could be that the higher compression of a diesel engine means bore and ring wear (which air filtration primarily prevents) would have a bigger negative effect on its performance, and so is less tolerable.

Air filters last for ages, so I;d probably try and buy the best, but

a) it may not be easy to identify, and

b) realistically, most engines will be scrapped long before bore wear is an issue,

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Tue 26 Jul 2022 09:36
nemo - Advice please on oil filter and air filters - badbusdriver

How much more is the dearer filters than the cheaper?.

But assuming this is a diesel (as there are way more of them than petrol), I'd be looking which is the best filter at doing its job rather than necessarily price.

TBH, I'd probably do the same if it was a petrol, but probably not that important as the petrol engine is a fairly simple device.

How would simplicity in the engine reduce its need for efficient air filtration?

I suppose it could be that the higher compression of a diesel engine means bore and ring wear (which air filtration primarily prevents) would have a bigger negative effect on its performance, and so is less tolerable.

Air filters last for ages, so I;d probably try and buy the best, but

a) it may not be easy to identify, and

b) realistically, most engines will be scrapped long before bore wear is an issue,

My comments were not surrounding the efficiency of filtration (which is why I didn't mention it), but quality.

We hear so much about the problems of modern turbo diesel engines, and while that is usually about usage along with emissions kit, there are also questions around the quality of servicing items, not specifically filters granted, but certainly oil. With this in mind, I'd be less concerned about using filters of unknown quality in a simple unstressed n/a petrol than in a small turbo diesel.

But as I said, due to the relatively low costs involved, I'd probably get the higher quality filters either way.

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Thu 28 Jul 2022 02:31
nemo - Advice please on oil filter and air filters - edlithgow

I suppose the (only?) other potentially relevant aspect of "quality" (a rather non-specific term) might be physical integrity. i.e. If the engine is likely to eat bits of its air filter.

Dunno whether diesels are more or less adversely affected by that, but it can apparently upset metering on a modern car (here its rodent-assisted).

www.youtube.com/watch?v=gtwfZUayVeU

The replacement filter in that case has a steel mesh rendering it mouse-proof, another aspect of "quality".

According to the Taiwan DMV mechanical knowledgee test, diesel engines can run backward, setting fire to the air filter, so maybe fire resistance might be a relevant aspect of "quality" for diesel engines.

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Tue 26 Jul 2022 16:47
nemo - Advice please on oil filter and air filters - Crickleymal

It's a while since I've owned a Citroen but as I recall the oil filters weren't that expensive to buy from Citroen themselves which eliminates a point of worry.

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Thu 28 Jul 2022 16:23
nemo - Advice please on oil filter and air filters - Steveieb

Always remember fitting a pattern air filter to my daughters Polo. It was sourced from a VW parts specialist.

She broke down in the fast lane of a busy duel carriageway and when Brittania Rescue came to the rescue they found the remnants of the filter jamming the carburettor air intake.

Full refund and replaced with a Bosch part but it could have been fatal.

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Thu 28 Jul 2022 19:46
nemo - Advice please on oil filter and air filters - paul 1963

I'm still waiting for John F to chip in with his penny pinching advice, infact if anyone has any old filters I'm sure he could make use of them! ( all said in jest John btw)

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Thu 28 Jul 2022 19:50
nemo - Advice please on oil filter and air filters - Xileno

When I was an impoverished 18 year old with a knackered MK1 Golf, I used to vacuum the air filter out rather than replace it. I never changed the oil because it burned so much although I did change the oil filter now and again, my theory being any crud would be caught by that.

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Thu 28 Jul 2022 21:09
nemo - Advice please on oil filter and air filters - _

When I was an impoverished 18 year old with a knackered MK1 Golf, I used to vacuum the air filter out rather than replace it.

What does impoverished mean?

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Thu 28 Jul 2022 21:31
nemo - Advice please on oil filter and air filters - Xileno

Skint.

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Sun 31 Jul 2022 12:50
nemo - Advice please on oil filter and air filters - edlithgow

I'm still waiting for John F to chip in with his penny pinching advice, infact if anyone has any old filters I'm sure he could make use of them! ( all said in jest John btw)

I do penny-pinching too, though maybe not advice as such.

Peny pinching air filtration projects have included

(a) Supplementary Filtration: So far just simple add-ons like wrapping the filter with toilet paper or open-cell foam, the latter in place at the moment.

I believe an old pair of tights is traditional, and I did once look at a Mk1 Panda for sale in London (by a Dodgy Geezer, natch) that ONLY had the tights, though it did seem to be rather knackered.

You could get quite elaborate, with add-on cyclonic or wet (oil bath or water bath) filters, maybe integrating filtration into a schnorkel. I believe there is a Ford "Lifetime Filter" that is basically a foam-filled front bumper. Just need some tubing and an old foam mattress.

Actually smaller than I thought, going by youtube videos of people replacing it, probably for no good reason.

www.youtube.com/watch?v=dc0Dr54qLBY

(b) Fit a Filter Restriction Gauge: This would tell you when you needed to replace your air filter, rather than blindly following the service schedule. It would also tell you when/if you were overdoing the supplementary filtration.

You can buy these, though I've only heard of them being used in the US, perhaps because they drive "trucks" which have a sort-of-affinity with lorries (i.e. large commercial vehicles)

www.youtube.com/watch?v=J1pgbJJ3boY.

www.amazon.com/air-filter-restriction-gauge

I made a water lift version which I wanted anyway for decoking the cylinders.

I took it off for the inspection (all modifications are illegal in taiwan) and lost it, but I need another decoke, so I might replace soon. This time I may make a dry gauge independent of the water inhalation.

Edited by edlithgow on 31/07/2022 at 16:26

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Mon 1 Aug 2022 02:38
nemo - Advice please on oil filter and air filters - edlithgow

An obvious application of the Air Filter Restriction Gauge idea would be an Oil Filter Restriction Gauge, which would tell you when you need to change the oil filter.

They seem to be available for industrial hydraulic systems but I havný heard of them on private cars, though I havn't looked very hard.

A non-trivial DIY job, and a cost to the manufacturer, so I don't see it as likely. Rather have it than most of the extra junk they put on new cars, though.

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Mon 1 Aug 2022 09:44
nemo - Advice please on oil filter and air filters - John F

I'm still waiting for John F to chip in with his penny pinching advice, infact if anyone has any old filters I'm sure he could make use of them! ( all said in jest John btw)

I do penny-pinching too, though maybe not advice as such.

Sad that my thoughtful economical and thrifty behaviour ( I never 'advise', only say what I would do....) has been described with such pejorative words, but pleased that the abuse of years ago has matured to amicable mockery. All those pennies (tenners, actually) pinched over my decades of self-servicing have added up to a very large pretty penny, enabling me and Mrs F to enjoy better cars than we otherwise might have done.

Oill filters are important - but I usually buy the next-to-cheapest I can find, and change it every 10-12,000 miles, however long it takes to get to that mileage (apart from the TR7). On the other hand, air filters can last the life of the car with occasional cleaning. Ours did (Focus, 21yrs old, 160,000+miles, went to the scrappy with original air and pollen filters, original cam and serpentine belts and original exhaust. )

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Mon 1 Aug 2022 11:30
nemo - Advice please on oil filter and air filters - nick62

The last time I serviced my own car (a Passat back in 2007), OE filters were cheaper from the VW dealer than the own-brand/pattern ones from Halfords!

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