Royal Purple XPR Extreme Performance Racing Synthetic Motor Oil - 20W50 - 1 Quart Fire Sleeve the stock HEI falls short

the stock HEI falls short

These easy to use

it can safely blend with all other automotive lubricants

Leaves no hydro-carbon deposits

600 in ID x 0

Royal Purple XPR Extreme Performance Racing Synthetic Motor Oil - 20W50 - 1 Quart Fire Sleeve the stock HEI falls shortRoyal Purple(R) 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. Royal Purple(R)XPR produces winning results on the race track and is safe enough to use in your daily commuter car.