?? I have excess to 101 race fuel and 93 octane and 91 octane which will create more energy by mixing 93 or by mixing 91 i usely mix to 94 octane or so with the 101 22 gallon x93=2046 +3 gallon x101=303 2046 + 303 = 2349 divided by 25=93.96 octane.So some of my lightning friends chime in here with your input. ?? which is best to mix

 

What are you trying to accomplish? Obviously the more octane the safer and more timing you can run.

 

The lower the octane the more energy and lower flash point = detonation. Higher octane burns slower.