MS100 is 100% Moonshine. I saw the Duke boys running it in the General Lee once.

Ethanol doesn't have an octane rating the same way gasoline does. There's no octane in it. Converting a car to run on Ethanol (or methanol) requires a complete change to the fuel delivery system.

Alcohols act differently than gasoline in an engine for a variety of reasons. It's really not fair to compare the two since they accomplish the same thing in a different manner.

Almost all gasolines have some amount of ethanol in them. As little as 10% or as much as 85%. It will eat most natural fuel lines made from rubber. Newer cars use synthetic rubber and other elastomers in places where there is going to be a significant concentration of alcohol.