SPEC FUEL/OIL: VP MS 98 for non Rotax 2-cycle classes with 8oz Burris Red Label Castor per gallon. Rotax engines use MS 93 Fuel with Motul 800 oil mixed @ 4 oz of Oil per gallon of fuel.     SPEC TIRES: Bridgestone YHC’s for all classes except, TAG and TAG Masters that may use the Bridgestone YHC or Burris B44A or Burris B55A, or Mojo D2.