Toulene is pretty safe. I wouldn't run more than thirty percent (3 gal tol+7 gal gas) in the tank. Did you add any trans fluid for a lubricant? About three ounces for every gallon added as a safety measure is the average I have found in most race gas recipes. Indy used this in the early 80's at 85% and was making 1000 hp per liter between 50 and 75 psi of boost. They would have used 100% I think but there was a octane limitation rule. I bet you could even replace the methanol in an injection unit with it.