you can run any fuel that works for you... most people on here would recommend Byrons... but that doesn't mean its the only fuel you should run.. at my track they are 4 different types of fuel generally ran at the track.. Byrons, VP power master, Odonnels, and team strike.. and they are mostly Nova engines .. so run whats available to you..the nitro percentage should be what matters the most.. as the majority in the US runs 30%