XPR 10W-40 is designed for marine, oval track and endurance car racing. Capable of withstanding long intervals of extreme heat, it works especially well with alcohol and methanol and is extremely popular in sprint cars, late models and World of Outlaws racing.
Royal Purple's XPR (Extreme Performance Racing) synthetic motor oil is specifically formulated for the demands of multi-platform racing environments. XPR is popular in a variety of motorsports including: NASCAR, NHRA, World of Outlaws and Bonneville Salt Flats.XPR combines the highest quality of synthetic base oil with Royal Purple's proprietary Synerlec® additive technology and additional performance enhancers that maximize horsepower and torque while providing the highest level of protection against motorsports-grade heat and wear. XPR synthetic motor oil provides more protection than leading synthetics and conventional lubricants including those combined with aftermarket additives. Professional engine builders and race teams cite increased horsepower and longer engine life with the use of Royal Purple. Exceptionally tough under extreme heat, Royal Purple XPR comes in a range of weights, each specific to certain motorsports applications and fuel types - such as alcohol, methanol and nitrous oxide.