Royal Purple, Ltd. Four Cycle Natural Gas Engine Oil: Quadrex® SAE Grade: 30

Quadrex® is a low ash, fuel saving, high performance, synthetic blend 4-cycle natural gas engine oil.

Quadrex® saves fuel and reduces maintenance costs. It extends drain intervals, ring and bearing life, prevents piston seizing and scuffing and keeps engines clean.

Quadrex® is formulated with Royal Purple's advanced proprietary Synerlec® additive technology, which is proven to make equipment run smoother, cooler, quieter, longer and more efficiently.

Quadrex® Hi-Base has all of the performance advantages of Quadrex®, but is formulated for gas engines using high sulfur fuel. When new, its sulfated ash is above 0.45, but in service, its synthetic solvency controls ash. This makes it comparable in performance to conventional low ash gas engine oils, yet it will still protect against the harmful effects of corrosive fuels. Quadrex® Hi-Base is available with TBNs of 8, 10 and 14.

Royal Purple Motor 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 Purple’s motor oils are API certified.

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.