[Neil Menzies]

quote:Just over a week now since picking up my 97 P 4.0l with 12K on the clock. As suggested, I''ve tried normal unleaded fuel but the engine seems a little lumpy and ''jerky'' at low revs. Is this normal and should I just revert to Super Unleaded? Expensive though!! Also, oil. Is Mobil the recommended oil to use? Thanks for any advice, Lee (Guildford)

If you've just spent £xxK on a car, and are probably going to be spending £2K a year on servicing/tyres etc, why are you trying to save £3 on a tank of fuel and have the car underperforming? Just go Super and be done with it. Neil

[apache]

I have spoken to a lot of people from the trade and have found from my own experience that M1 is too thin. Ihave been advised to use a 10/40 mineral for 2/3000 miles to deglaze the rings/bores then revert to 10/40 synthetic, I use Texaco F3. Already the oil consumption has gone from 3/500 miles a litre to 1000 miles a litre, no soot on the back of the car and the oil stayed clear longer

[philr]

Ive been using Comma 5-40. Happy enough with the oil etc, but I reckon that I use about 5 litres in 6000 miles.

[Neil Menzies]

quote:fair enough! Only asking!!

Sorry, my post came across as a bit tetchy - wasn't meant to be! Neil

[graham]

I now run mine on Leaded if i can get it = Best, and it makes you feel so much better if its pumping lead... LRP = almost as good Super = not quite as good but not by much unleaded = driving to work.... no pinking but pickup not as good as the others I'll let you guess howcome i can run any fuel 96 4LTR chim

[fordy]

Have you de-catted yours then????

[graham]

Hee Hee Hee.. Might have.... sound is much better and it revs much better, and apparently it spits falme if you try very hard...

[Nobby]

Just to stir thing up...I used to run my 4.0l engine on premium and noticed no difference at all from super and never had a problem with pinking. It may well be another story with 4.5-5.0l engines but with a 4.0 I'd save the money.

[macca]

quote:It may well be another story with 4.5-5.0l engines

Nope, my 4.5 is quite happy on standard but I only put it in every 3rd tank or so. Somehow, saving £3 a tank makes you feel better