Royal Purple Motor Oil delivers superior protection and improves performance in four-cycle gasoline and diesel engines. Recommended for use in all 4-cycle gasoline engines, and diesel applications including cars, trucks, motor homes/RVs, boats, commercial fleets, and stationary industrial diesel engines. It increases horsepower and torque, saves fuels and reduces heat, wear and emissions. It has unsurpassed oxidation stability that allows for extended oil drains and fewer oil changes, which saves you time and money and reduces the impact on the environment.

All Royal Purple engine oils contain the zinc/phosphorous compound zinc dialkyl dithiophosphate (ZDDP) and are suitable for both roller and flat tappet valve trains.

Royal Purple’s motor oils for passenger cars and trucks are API licensed.

Royal Purple’s performance advantages come from a blend of synthetic oils plus Royal Purple’s proprietary **Synerlec technology. Royal Purple Motor Oil is compatible with other mineral and synthetic motor oils. It’s available in 0W40, 5W20, 5W30, 5W40, 10W30,10W40, 15W40, 20W50, SAE 30, SAE 40 and SAE 50 weights. (Some weights may be special order)

Excellent for yesterdays performance street engine's and today's turbo, supercharger and even warranty motors. Motors stay cleaner and run cooler, resulting in better gas mileage, less engine wear, and longer oil life.