yeah well ive owned and ran a hobby shop that specailized in Rc and for 1 thing I never said it wasnt very flammable I said it doesnt ignite easily and I said that cause it doesnt ignite easily, you can light and stick a match in it and it wont explode, same as with deisel the fuel must be warmed above a certain point b4 being igniteable, and ur also incorrect as to why glow plugs are used, theyre used cause nitrol fuel cant be ignited with a spark, it would clog any spark plug in the first attempt to fire on it, thats why gas powered rc vehicles dont and cant use a glow plug, 2 totally different fuels so 2 totally different ignition systems thats why theyre used, also the reason the igniters are needed is cause if the rc vehicles not been run yet the glow plugs alone arent usually strong enough to ignite the fuel so u use the igniter to prewarm the plug and fuel