Omi with gas system

A friendly “hello” to all Omi drivers I have a question: I wanted my Omi 2.5l 170Ps Bauj.97 to be converted to car gas. It is liquefied gas and no natural gas. I ended up for liquefied gas, as the tank (66l) fits into the reseveradmulde and does not take any space away. Does anyone have experience with it and can tell me how high the gas consumption is with it? Does the engine run just as well as with petrol?