Cerberus90 Hey m8 before you decide to put a hotter fuel in your truck make sure the head is shimmed right. To go to a hotter fuel you need to lower the compression. Unless of course you have unlimited funds and can afford a prematurely burned up engine I run 25% maximum without shimming the head and thats a little hard on it anyway. Most all the Schumacher cars are designed to run on 20% and the only reason to go to a 30% would be because your racing or your just a speed freak GOOD LUCK & HAPPY RC'en