We have already established that a gallon of gasoline can not be compared to a gallon of diesel as both have different energy contents. Apples and oranges.

We must first equalize both energy inputs when analysing the (conversion) efficiency of the two engines. Looking at volumes (gallons) is not doing that.

But what am I doing here ? I've explained this several times already in my other posts and you still don't get it. Why would you understand it now ?

Wouter