The following information should give anyone considering the use of gasoline as a fireknife fuel plenty of reason NOT to do so. Gasoline, the fuel most commonly used in car engines, is highly flammable. But it's not the liquid itself that burns. Even at temperatures as low as -45ºC, gasoline gives off vapour - and it's the vapour that ignites. The vapour is also heavier than air, so it lingers at ground level and in enclosed spaces. All it takes to create a violent explosion is enough oxygen and a source of ignition - a spark from a cigarette, a hot exhaust pipe, faulty wiring, or a wisp of vapour reaching an open flame such as a match or a pilot light. The explosion that follows can be incredibly devastating. Just a single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite. Even aside from the explosion potential, gasoline is dangerous stuff. Spilled on the skin, it removes natural oils and fats. The skin dries and cracks and secondary infections may follow. Gasoline vapours can cause dizziness, vomiting, unconsciousness, even death, if inhaled in strong enough concentrations. And it's still flammable, even when it's dried on clothing or shoes - or on the skin. All of this means that gasoline is extremely hazardous and should never be used for fireknife dancing.