mpg on lpg?

Post by **Flibbertigibbet** » 11 Jun 2007, 19:21

on "average" I get 197 miles on 55 litres ..whatever that means but I live in Brighton so many hills etc...I once worked out paying for my conversion and my savigns and I reckon it paid for itself with 6 to 8 months

Post by **Cruz** » 11 Jun 2007, 20:38

I worked out that to break even you need to do 6020.4 miles. After that it's pure profit

I used averages of 0.939p/litre for petrol and 0.429p/litre for LPG giving a difference of 0.51p/litre and using an average consumption figure of 17mpg

Conversion cost = £820

Difference between average petrol (93.9p) and LPG (42.9p) cost =£0.51p/litre

£820 divided by 0.51 = 1607.8 litres

1607.8 litres divided by 4.54 = 354.14 gallons

Average of 17mpg x 354.14 gallons = 6020.4 miles to break even

Post by **gmiller** » 13 Jun 2007, 13:34

At 23mpg on Petrol at 95.9p a litre

17mpg on gas at 41.9p a litre;

Cost of conversion £950.

Break even at 12279 miles.

Please don't ask to see the working out!!!

Gary

Post by **steve8090** » 13 Jun 2007, 14:44

Gary

Some people don't listen do they!!!! You cannot do you calculations from a new conversion, the system will need to be run in and then adjusted, I did tell you all of this, if you are doing 23 on petrol then we should be able to match it on gas, but not yet so please stop harping on.

Post by **gmiller** » 13 Jun 2007, 14:54

Just going off the figures folks have chipped in, Steve. Reading this thread, 17-18 mpg is average.

Shall stop harping on now.

Gary

Post by **Cruz** » 13 Jun 2007, 14:55

17-18 was my average on petrol too as it is now on LPG. Rising to 23 on motorway runs.

ut who cares? I'm going to be quids in on LPG

Post by **phredd** » 13 Jun 2007, 18:44

Had recon engine last October so the following figures are from then :->>

LPG = 1536.32 ltrs
Miles = 5656

MPG = 16.7.

Mostly about town with a few long runs.

So I have no complaints

Phredd