Royal Purple Heavy Duty Motor Oil is recommended for use in all 4 cycle gasoline engines and both two-cycle and four-cycle diesel applications including automotive, commercial fleet, and stationary industrial diesel engines. Royal Purple Motor Oil is a tough, long life, high performance oil that delivers superior protection and enhanced performance to gasoline and diesel engines. It gains its performance advantages from a blend of synthetic oils plus Royal Purple's proprietary, synthetic Synerlec additive technology. Synerlec additive technology greatly reduces engine wear, including ring, cylinder and bearing wear. It is extremely tenacious, adheres to engine surfaces and mating materals and remains even long after shutdown, which provides superior protection during initial startup.
This is the best oil out there. I flushed the engin then put this in and showed some small gains. either from the good clean but this oil really helps alot.
Tiny reviewed Royal Purple Multi Grade Motor Oil part # 12530
I went from Mobil1 Synthetic (15w50) to Royal Purple (20w50) and notice a very nice improvement. It made some of my lifter tick go away. And I noticed a slight performance improvement. Not faster! Just felt better, ran smoother.
3spride reviewed Royal Purple Multi Grade Motor Oil part # 12250
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Reviews of Royal Purple Multi Grade Motor Oil
