@mxtthxw

I got the impression that Gasoline is a refined petroleum, hence they call it gas for short. In the UK we can fill the car up with 'Juice' so in this context Juice is a nickname for Petrol or fuel. Juice can also I think refer to electrical power, give it more Juice = turn the power level up.

This may however be limited to certain areas where these terms have become more a local part of the language.