Fuel prices!

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P38 Andy

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33
Location
Northen Ireland
I currently have a 4.6 petrol P38 that has a single point LPG system that was fitted about 8 years ago. Im still finding the cost of fuel for the car very high, for about 80 litres of LPG im getting about 220 miles. I dont want to get rid of my Range Rover because I love it so much and im thinking about converting it to diesel and using a bio fuel mix. Has anyone done this? and could you offer any advice? thanks Andy
 
Bad Idea keep it as a weekend car or sell it if you can't afford to run it.
converting a p38 to diesel is not straight forward and unless you have complete diesel donor never worth the effort
 
think you will find that you get more miles to the £ from lpg than a doozil conversion and even if it did reduce cost by the time you have factored in the price of a replacement engine and fitting it would take forever to recoup any costs.

agree with fanny on this one if you cant afford it have a weekend toy or you may have to bite the bullet :(
 
with a multi point you might get a few extra mpg but if it was me i wouldnt bother and put the cash towards your fuel bill.

quickly working it out you are getting around 13-14mpg which is about the same as i was getting with mine and seems about right considering the losses from running lpg over petrol. Dont know how much a multi point would cost but even if you gain a couple of extra mpg how quickly would it pay for itself?

best thing to do is look at the mileage you are doing and then the cost of conversions and possible savings made. You can then work out which is best for you
 
I have a Tartarini Multipoint System on my 4.6 and I get about 280 out of 76 litres.

That said I'm with the crowd ... as you don't want to shell out for a MP for the marginally better MPG as it's quite serious money.

I would note that if your system is 8 years old it might benefit from a trip to the LPG specialist who ought to be able to retune it to improve efficiency.

Don't even think of going to diesel - unless you want to spend a lot of money on converting a reasonably responsive car (I'm assuming your lpg is a tad less responsive than on petrol) into an unresponsive nightmare!

Martin M
 
I have calculated that my LPG is working out cheaper than my diesel was..... the balance altered over winter as LPG went through the roof, but recently LPG has come down and diesel has continued to rise....
 
P38 Andy said:
I currently have a 4.6 petrol P38 that has a single point LPG system that was fitted about 8 years ago. Im still finding the cost of fuel for the car very high, for about 80 litres of LPG im getting about 220 miles. I dont want to get rid of my Range Rover because I love it so much and im thinking about converting it to diesel and using a bio fuel mix. Has anyone done this? and could you offer any advice? thanks Andy
Click to expand...

I'm getting about 225 out of about 75 litres on my multipoint, so not much difference there. I'd just get it serviced as Martin suggested, but remember that single point isn't ideal for the P38.
 
You might find that if you change the plugs , leads and air filter and get the CO2 level set, then get the LPG correctly set your mpg will improve. Those older wiser and more skilled than me have taught me that doing the basics well is often the best way forward before spending loads of cash. Cheers Nick
 
Can't see it making much difference.... in theory the bigger diameter wheels should give you a higher final drive ratio, so better fuel economy.... but barely measurable in the great scheme of things.....

Range Rovers were designed as luxury vehicles, not everday motors..... more so the old the models a classic vogue in its day cost as much as a 3 bed house, my P38 in 2002 tipped the scales at just over 60k..... what I'm trying to say is the people willing to shell out that kind of money did'nt give a crap about fuel economy.... as already said they make a good weekend car, I'm not sure anyone could enjoy using them everyday at today's pump prices!!!!
 
MSX150 said:
Can't see it making much difference.... in theory the bigger diameter wheels should give you a higher final drive ratio, so better fuel economy.... but barely measurable in the great scheme of things.....

Range Rovers were designed as luxury vehicles, not everday motors..... more so the old the models a classic vogue in its day cost as much as a 3 bed house, my P38 in 2002 tipped the scales at just over 60k..... what I'm trying to say is the people willing to shell out that kind of money did'nt give a crap about fuel economy.... as already said they make a good weekend car, I'm not sure anyone could enjoy using them everyday at today's pump prices!!!!
Click to expand...

Not quite true, higher ratio needs more power to pull it. It will also make your speedo illegal.
 
wammers said:
Not quite true, higher ratio needs more power to pull it. It will also make your speedo illegal.
Click to expand...

Yes will need more power to pull it..... but on a motorway for instance once you are up to speed then, in theory you should be slightly better off....

I would illegal is a little harsh.... very few speedo's are 100% accurate anyway.
 
seeing as how I drill oil wells, Im kinda please fuel is going up - keeps me in work

and on a note to get the cats squealing - when I was 20 like, it cost me 30% of my salary in fuel just to get to work - owning a car was not an everyday deal .....
you could say, fuel has never been so cheap as it is now hahahahahaha
 
MSX150 said:
Can't see it making much difference.... in theory the bigger diameter wheels should give you a higher final drive ratio, so better fuel economy.... but barely measurable in the great scheme of things.....

Range Rovers were designed as luxury vehicles, not everday motors..... more so the old the models a classic vogue in its day cost as much as a 3 bed house, my P38 in 2002 tipped the scales at just over 60k..... what I'm trying to say is the people willing to shell out that kind of money did'nt give a crap about fuel economy.... as already said they make a good weekend car, I'm not sure anyone could enjoy using them everyday at today's pump prices!!!!
Click to expand...

I use mine as an everyday car, I don't think 24mpg is too bad and I get close to 30mpg on a long run. My Renault 5 van was not a lot better, my Transit does between 29 & 34mpg!
Taken over the 12K miles I do in it a year, changing to something that did 40mpg would not save a fortune and I would lose the comfort plus a new car would cost more in depreciation than I would save on diesel:)
 
Have to agree with you; overall running costs aint that bad, tyres, brakes, and other wear parts seem to last for years and years!
 
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