How Many Miles To A Tank Full????

[GreyGhost]

I think I'm right in saying you are both correct. Recommended oils are:-
0W-40 fully synthetic
10W-40 semi synthetic.

[JohnDotCom]

Thanks for the Confirmation MM.

[Rob_N]

Originally Posted by driverjgp

Thats interesting, is yours an Auto? mine is an auto and from full to the orange light i get about 250 miles.

WOW!!! I have a 2001 Auto CDT and from full to yellow light I get about 385-390 miles at this time of year but in the summer it is slightly better (don't know why.... it just is) with about 400 to 410 miles - however I do tend to drive with a light right foot. With a tankful costing over fifty quid yours must be a very expensive motor to run!!

I was always told the single most important factor in determining fuel economy (petrol or diesel) was how hard you accelerate so I tend to drive with the MPG display showing on the computer and accelerate quite gently which helps to give decent fuel consumption. I tend to get about 35mpg overall in winter with about 38mpg in summer. On a long motorway run it is much better - a recent run to Gatwick and back showed 46mpg. My daily motoring is usually 5 miles on B roads, 5 mile crawl to the motorway, 3 mile crawl to the next exit, 5 miles A roads to work, and the reverse on the way home. Scintillating journey, isn't it?, and the best part of an hour each way....

Given that it is a large, heavy automatic luxury car I am very pleased with the fuel consumption. The performance is nothing to shout about but I didn't buy a sports car - I bought a Rover, and I'm pleased that I did.

[GreyGhost]

2.5 Automatic Rob, is a very thirsty beast, I get between 20 and 28 mpg out of mine. Depending on traffic conditions.
Fortunately my yearly mileage is under 8K so it is not too much of an issue.

[jim_mcglynn]

Ditto to that GG. I reguarly get 26mpg. That's got an average speed on the trip computer of 25-30.

I reset the trip computer on every fill up. Optimax (or whatever the new one is called) gives me over 26-28mpg, Tesco's cheap stuff gives me 25-26mpg.

[jim_mcglynn]

...about the same in the B. That's progress !

[Tim_Burgess]

My old Cdt averaged 48 mpg. I had the Cdti upgrade done and the best I managed after that was 58mpg on a steady (mainly motorway) run at 70/75 mph from Bristol to Huddersfield.

By contrast my current 1.8 petrol averages 34mpg on a steady run.

[Christopher]

Hmmm! I've always complained that my 1.8 Petrol gives me 22~24 mpg in the city but that is in very very short runs - 4 or 5 miles a day and a few more in the weekend. On a good run on the motorway that goes up to 36 mpg and even 38/39 mpg if I watch my speed/ revs.

I know the small trips don't help but I still think 22 mpg is very poor.

[pshuttle]

Originally Posted by Ti Rich

Pete

A few things to try!

1) Tyre pressures - make sure they are correct.
2) EGR / PCV clean - it may help a little. See the how to guides on this website.
3) Oil - Use a good quality oil. I find a 0-40w gives a bit better MPG than the 10-40w specified.
4) Reduce the MAFAM a little - as you suggest. Are you getting any smoke?

One more thing - you do have the correct MAFAM for the Pierburg MAF?

OK, and another, where do you have the temperature sensor for the MAFAM?

Hi,

Thanks for the heads up. I am going to try all the things you mentioned at the weekend. Unfortunately I am too busy this week to do it any earlier.

The last time I checked, my tyre pressures were ok (last week). The oil I used when I last did a filter change was Halfords Semi-Synth 10-40w (diesel).

I bought the MAFAM from RoverRon with the temperature sensor for use with the Pierburgh.

Cheers,

Pete

[Ti Rich]

Pete

Are you getting any smoke at all under hard acceleration?

It may also be worth investing in some good quality injector cleaner.