XPR - Extreme Performance and Racing oils are formulated for ultra-performance applications such as racing, modified engines and off-road use. XPR''s high film strength make it exceptionally well-suited for today''s high performance cars and trucks, particularly turbo and supercharged engines and / or engines using a nitrous boost. XPR produces winning results on the race track and is safe enough to use in your daily commuter car. Professional engine builders and race teams have cited increased horsepower and torque, and longer engine life with the use of Royal Purple. According to multi-year IHRA Top Fuel Champion Clay Millican, "When we began using Royal Purple, I couldn''t believe the difference. Run any oil back to back with Royal Purple and you''ll see a difference." Independent tests on racing engines show as much as an 80% reduction in wear by using Royal Purple''s XPR oils compared to other racing oils. XPR combines the highest quality synthetic base oil, Royal Purple''s proprietary Synerlec additive technology and additional performance enhancers to create a lubricant that maximizes horsepower and torque, while providing the highest level of protection against heat and wear. XPR provides more protection than conventional motor oils (mineral or synthetic) including those combined with aftermarket additives. Be sure to follow the manufacturer and / or engine builders recommendations when selecting oil viscosity. Please contact our technical support department (Technical Support or 888-382-6300) for recommendations on modified engines. XPR 10W40 (formerly Racing 41) is a light viscosity motor oil formulated to withstand exotic fuels such as alcohol, methanol and nitrous oxide (NO2). Excellent for drag racing.
