[FRiSson]

Originally Posted by ReVoiD

also we put in a liquid so its pretty silly to call it gas.
call it petrol or fuel instead.

http://en.wikipedia.org/wiki/Fuel#Solid_fuel

or go all out on the JDM train:

ガソリン

"Gas", abbreviated from "Gasoline"
"Petrol" abbreviated from "Petroleum Distillate"
"Essence" ?