Sorry if this is an old subject. My CR-V is now three weeks old and fully run in according to the guide. It's a 2.2 diesel and at the start I was getting worried, because I was getting nothing like the 41mpg that most claimed was possible - 35-37 at best. My daily journey is five miles through town, forty miles on a motorway - 66mph according to the satnav - and then five miles through Bristol city centre, each way. I admit, I am not too bothered by the make of fuel I put in the car, going for the cheapest I see at present, as it ranges from 114-125 in the south west.
Last two times, though, Shell have been cheapest at 113, so that's where I have filled up and suddenly I'm averaging 40-41 at the end of each day. Is this because I am now through the 1500 miles mark, because I am using Shell rather than Morrisons or Tescos(amongst others) or is there another reason. If it is the Shell fuel, is there any other make that will give me even better fuel mileage?
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A diesel isn't going to be properly 'run-in' in 3 weeks, according the accepted wisdom on this site SFAIK. Have a look at www.honestjohn.co.uk/faq/faq.htm?id=32
Edited by Armitage Shanks {p} on 16/04/2008 at 20:03
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You'll need 5/10,000 before it really settles down.
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Answer to question: Whoever sells the cheapest (legal) fuel to the vehicle maker's specification - usually EN590.
I use Tesco fuel with money off vouchers when available in my VAG PD engine.
Diesel engines are extremely insensitive to fuel variation provided the Cetane rating is sufficient. This is one of their many advantages. There's a spec. - stick to it.
659.
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>>My CR-V is now three weeks old and fully run in according to the guide.
I'd wager when you've done 10,000 miles you'll think it's running better than ever and when it hits 20,000 you'll know it's "just run in." All my owned from new diesels (2 x VAG 1 x Citroen and 1 x Ford) have felt "better" at 20K than when new.
I think if you analysed all the posts on diesel over all the forums and web sites, Shell would come out on top as the peferred one. What price that relationship with Schumacher and Ferrari, and latterly Audi and Le Mans? "Lewis Hamilton and Tesco 99, the fuel of choice?" Maybe!
Seriously though, a diesel properly run in, regularly serviced and maintained will operate well on any fuel (if to a standard) regardless of marketing hype and anecdotal evidence.
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Thanks for the driving lesson Armitage - I did say according to the guide!! Every car I have ever known - 20+ as a high mileage company car driver - has loosened up after 20k miles, but this is only my second diesel and the first where I suddenly saw a drastic change after changing from mainly supermarket to branded fuel, where that or the newness of the car were the only factors.
I have to say - now up to 2000 miles, I get to 3500rpm through the gears, but there is no way this car is getting any higher without having thrashed it beyond its life, so I am taking honestjohn's advice with a pinch of salt on this occasion.
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Its going to get it at the first MOT though Tags... I agree with you though, pity about diesel MOT`s.
I`m starting to prepare mine for the shock it will get next winter;)
Regards
Edited by oilrag on 17/04/2008 at 20:04
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tags - No 'lesson' intended I assure you - what do I know? I wasn't sure what 'guide' you were referring to (car handbook?) so I just posted the link to one of HJ's FAQs. High revs is something to do with with bedding in the piston rings to subsequently enhance engine performance in later life. Other discussion recently re a good burst up a hill in 2nd gear from time to time, although that may have been related to particlate filters on Euro IV diesels.
Edited by Armitage Shanks {p} on 17/04/2008 at 21:07
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I have to say - now up to 2000 miles I get to 3500rpm through the gears ...
Do you go to 3500 RPM in each gear each time?
If so, you won't get the claimed economy. I have driven diesels for a number of years now and (apart from the occasional clear out), tend to change up around 2000RPM and let the enqine torque do the rest.
Good luck.
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I must be a geriatric racer, I change up at about 2500!
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That`s general driving with the exception of top gear ;)
73.3 MPG on a return trip to Bridlington this week. Thats just under 60MPH, with a couple of full throttle blasts on the M62 to get past problems. (multijet Punto van)
Edited by oilrag on 18/04/2008 at 14:27
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Ah, I made an error, I change at 2,300 to *drop back* to 2,000 after the change.
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