A couple of years ago I asked a friend about mixing Gasoline with Methanol and was told you couldnt do it.
Mixing Nitromethane with Gasoline requires Benzine I think it is .. and makes for a very unstable mixture if allowed to sit for short bit. There was a Drag Racing Team in So. Cal. that was called " The Surfers " and they were very well known for mixing Gas and Nitromethane. Heard from a couple of guys that they would mix the two in the staging lanes right before a pass.
Just passing along some useless trivia ..............