4.4 V8 Lpg Mpg
- Thread starter m1fte
- Start date
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al-one-arm
Well-Known Member
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- 409
- Location
- burnham-on-sea,somerset
my 4.0 se does 132 miles on £40 on petrol
and 143 miles on £20 lpg
and 143 miles on £20 lpg
sean moloney
New Member
- Posts
- 1
m1fte
I've got a 72ltr donut and i get 180-200 mls every fill up
Sean
I've got a 72ltr donut and i get 180-200 mls every fill up
Sean
Jules Thorne
New Member
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- 8
- Location
- York
I thought mine was bad, 200 - 220 per 70ltrs!! 
But maybe not. I believe that a lot depends on injection type and mapping for your car. Mine was installed by Wains Classic Rebuilds, he rechecked all mapping for the car after a bedding in period of 2K miles.
If the car mix isn't right then you won't get the mpg you might have thought. You should be looking at 20% less mpg for lpg than for petrol as the octane figure is not as high
Rgds
Jules
But maybe not. I believe that a lot depends on injection type and mapping for your car. Mine was installed by Wains Classic Rebuilds, he rechecked all mapping for the car after a bedding in period of 2K miles. If the car mix isn't right then you won't get the mpg you might have thought. You should be looking at 20% less mpg for lpg than for petrol as the octane figure is not as high
Rgds
Jules
meles meles
New Member
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- 20
Not quite right, 'ooman.
The calorific value (energy content) of LPG is about 5% less than petrol (it varies, some companies mix a little butane in with the propane), so you will get 5% fewer miles per gallon. The octane rating is a measure of resistance to ignition and LPG is better in that respect than petrol: you won't get 'pinking' from LPG going up a long steady incline whereas you might on petrol.
The calorific value (energy content) of LPG is about 5% less than petrol (it varies, some companies mix a little butane in with the propane), so you will get 5% fewer miles per gallon. The octane rating is a measure of resistance to ignition and LPG is better in that respect than petrol: you won't get 'pinking' from LPG going up a long steady incline whereas you might on petrol.
