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Jet fuel is made of Kerosene, usually pure kerosene.

Not really, Jet Fuel veries heavily on the engine and its roll, for instance in a 2cnd Generation jet like the F9 There is watter and methynole mixed with petrol. some planes have multiple tanks filled with different fuels to be used in emergancies (These are mostly combat aircraft though)

Gavin, im talking about civilian jet fuel. I know the military has different sorts of jet fuels most common of which are kerosene based fuels.