Royal Purple 20W-50 oil

Delivers superior protection and improves performance in four-cycle gasoline and 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. Royal Purples motor oils are API certified and will not void new vehicle warranties. Royal Purples performance advantages come from a blend of synthetic oils plus Royal Purples proprietary Synerlec technology. Royal Purple Motor Oil is compatible with other mineral and synthetic motor oils.