When I was a kid, back when leaded gasoline existed, the old timers said that white gas, and unleaded gasoline were the same thing...
"White gas is a common name for two flammable substances.
1. In its most common modern usage, "white gas" is used as a generic name for camp stove and lantern fuel, usually naphtha.
2. White gasoline, also called white gas, can also be a name for pure gasoline, without additives. This was commonly used when leaded gasoline was the norm, to prevent fouling in situations where the properties of the lead additive were not required.
3."White gas" can also refer to un-dyed gasoline."
http://en.wikipedia.org/wiki/White_gas"Coleman fuel is a petroleum naphtha product marketed by The Coleman Company. Historically called white gas (not white spirit), it is a liquid petroleum fuel (100% light hydrotreated distillate) usually sold in one gallon cans. It is used primarily for fueling lanterns and camp stoves. Additionally, it is a popular fuel for fire dancing.
Originally, it was simply casing-head gas or drip gas which has similar properties. Drip gas was sold commercially at gas stations and hardware stores in North America until the early 1950s.
The white gas sold today is a similar product but is produced at refineries with the benzene removed.
Coleman fuel is a mixture of cyclohexane, nonane, octane, heptane, and pentane."
http://en.wikipedia.org/wiki/Coleman_fuel