AVGAS..otherwise known as 100LL.....The "LL" stands for
Low Lead. If your equipment has a catalytic converter, this fuel will likely have an adverse effect on the converter.
100LL has a very fast evaporation rate....get it on your fingers and it evaporates fast enough that it feels somewhat like acetone evaporating. Some older gasoline engine aircraft that were designed for 100LL can sometimes be certified to burn "MoGas"..which was leaded automobile gas back before ethanol. I don't know if these older aircraft can be certified for E10 or not.
NB
FWIW: There was a guy I knew a few years ago who was very big into antique race boats. He had an old supercharged Offenhauser engine from an Indy Car from way back. He had a hydroplane built to take the Offy engine. The Offy was designed to burn alcohol. He intended to use gasoline in it. I don't remember if the gas was 100LL or not. The fuel burned too hot and the (aluminum) engine destroyed itself....melt down. $100K..Poof.
