THIS IS FROM THE TOWER SITE for your engine: Fuel: 10%-20% nitromethane with 18% lubricant. Synthetic, castor, or a synthetic/castor lubricant blend may be used.

Any good fuel will do such as Wildcat Fuels, Mogan Fuels (Cool Power or Omega), Byron Fuels, and S&W Fuels. Just follow the guidelines of what the manufacturer says above and just about anyone of these fuels will work just fine for you. I would probably go with 15% Nitro as I think it is the most commonly used. I hope this helps.