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Royal Purple

Royal Purple Motor Oil delivers superior protection and improves performance in both gasoline and diesel marine engines. Whether your watercraft is two-cycle or four-cycle, Royal Purple increases horsepower, saves fuel and reduces heat, wear and emissions. Royal Purple’s unsurpased oxidation stability allows for extended oil drains and fewer oil changes. This saves you time and money and reduces the impact on the environment.

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 marine motor oils.

Royal Purple motor oils are recommended for use in all 4-cycle gasoline engines, and both 2-cycle and 4-cycle diesel applications including cars, trucks, motor homes/RVs, boats, commercial fleets, and stationary industrial diesel engines. Royal Purple motor oils are tough, long-life, high-performance oils that deliver superior protection and enhanced performance. They gain their performance advantages from a blend of synthetic oils plus Royal Purple's proprietary, synthetic Synerlec additive technology, which greatly reduces engine wear, including ring, cylinder, and bearing wear. They are extremely tenacious, adhere to engine surfaces, and remain after shutdown, which provides protection upon initial startup. Royal Purple motor oils also extend oil drain intervals. Less oil is purchased, and less oil is disposed of--it's good for your vehicle, and good for the environment. Multi-grade and straight-grade oils are available. Royal Purple motor oils are compatible with other mineral and synthetic motor oils.

Royal Purple Break-In Oil
Engine Oil, Break-in, Mineral, 10W30
$9.99
Royal Purple HPS Street Motor Oil
Synthetic, 10W40, HPS Street
$9.99
Royal Purple HMX High-Mileage Motor Oil
HMX High Mileage, Synthetic, 5W30, 5 Quart Container
$40.99