This would be similar to oil, except that each particle creates multiple particles of GAS (similar to how burning COAL makes multiple particles of FIRE). The idea is to allow engines with slower, more realistic speed fuel consumption. At the same time this would not break any existing saves.
I make gasoline powered chainsaws in tpt that uses oil. It would be nice to have gasoline for them , only disadventage : save updates of a few tons of chainsaws I made for customization of my 7th and final chainsaw