All examples below are based on VP Racing formulated fuels. If you are not using VP fuel, always check with your fuel manufacturer for compatibility and recommendations.
Harsh Fuels:
These fuels are ethanol or alcohol-based and have a high risk of corroding your injectors in a short period of time. Corrosion occurs when oxygen mixes with the fuel inside the injector. Harsh fuels include, but are not limited to: M1 (VP spec formula): Methanol, M5 (VP spec formula): 95% methanol, 5% nitromethane, Nitromethane, Nitro 50-50: 50% methanol, 50% nitromethane, “X” Series Fuels: X85, X85L, X98, and some “C” Series Fuels: C85.
Oxygenated Fuels:
These fuels have air mixed into their chemical makeup to create more heat energy in the cylinder, but this also increases the risk of corrosion. Examples include, but are not limited to: “Q” Series Fuels: Q15, Q16, Q16 REG, and some “C” Series Fuels: C45.
Non-Harsh Fuels:
These are petroleum-based, unleaded racing fuels that are non-oxygenated. They contain lubricants that allow injectors to sit for longer periods without risk of corrosion. Non-harsh fuels include, but are not limited to: some “C” Series Fuels: C10, C11, C12, C14, C14 Plus, C15, C16, C20, C23, C25; “VP” Series Fuels: VP110, VP113 REG, VP Import REG, VP MGP, VP Vintage Leaded; HP101; and some “X” Series: X14, X16.
If you have questions about which fuel is right for your application, consult your fuel manufacturer or contact us for guidance.