The last couple years the event fuel has been VP Racing. There was a semi loaded with all kinds, all you need. I thought I would burn way more C14 than I did. I brought 15 gallons or so and since I broke I actually brought a partial can home. When you run for a record you have to show at the truck with an empty tank. They add the amount you request and seal the tank. It stays sealed until you back up the record run unless you need more, then they add fuel and reseal. I didn't make it that far, but will next year!