These oils are certified by the American Petroleum Institute (API) and are intended for use in all vehicles still under manufacturer's warranty. Use when certified SN, SL, or CJ certifications are required.
Royal Purple's unique mineral based oil specifically designed to aid in high performance engine break-in. Excellent for seating valves and piston rings. Not meant for extended mileage use.
Royal Purple's Purple Ice will reduce engine temps, and help you keep that engine cool under stress, releasing more valuable horsepower to the pavement.
These are Royal Purple's most advanced oils for street car use. HPS oils have higher levels of ZDDP, the anti-wear additive used to protect flat tappet valvetrains. Choose these oils for hot...More Details »
Royal Purple's very best synthetic racing oils. When only the very best oil will do, choose an XPR for your race engine. High levels of ZDDP and other Synerlec additives, XPR is for high...More Details »