Royal Purple XPR Racing Oil, 10W40, 1 Quart Bottle

XPR — Extreme Performance Racing oils are formulated for demanding 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 cite increased horsepower and torque, and longer engine life with the use of Royal Purple.