I've used all kinds of fuel. In my Maxx I've used Trinity Monster, and Platnum, TopFuel, and Odonnel. all 20%. Though I still run the Platnum from time to time because I have a quarter gallon of it still, I have to say that I have the most consistant luck with the Odonnel. The Odonnel, or the Monster was recomended to me for my .21 OS VZBon my buggy for the higher oil content, and it has proved to be good for all my RC cars. Except the MTX-3, only because I just got it, and haven't ran it just yet.