Drive an old 4ltr V8 Lexus which is LPG converted. Converting back to equiv petrol prices as gas is still only 56p a litre I get an average of 38-42 mile per gallon. running on petrol get between 26-30.Car now done 165000 miles and engine still perfect which they say is because it is running on LPG. Will definitely swap the conversion on to next car.
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