Originally Posted by ghosthunter nope... 1L of LPG is lighter than 1kg. 1L LPG = 0.51kg from http://www.langegas.com/gasle.htm but if you want to compute your gasoline vs LPG savings, you will have to use fuel mileage of gasoline vs LPG, not just simple cost per liter. Ok thanks!! Yup planning to do mileage too