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Royal Purple's proprietary additive technologies, such as Synerlec, enable its products to outperform leading synthetic and conventional lubricants
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Royal Purple® Motor Oil

Motor Oil

Royal Purple® Motor Oil is recommended for use in all four-cycle gasoline engines and both two-cycle and four-cycle diesel applications including cars, trucks, motor homes / RVs, boats, 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 remains after shutdown, which provides protection upon initial startup.

Environmentally Responsible: Royal Purple® Motor Oil extends oil drain intervals. Less oil is purchased and less oil is being disposed of—It's good for your vehicle, and good for the environment!

Multi-Grade Oils: 5W30, 10W40, 20W50
Straight-Grade Oils: SAE 50
Royal Purple® Motor Oils are compatible with other mineral and synthetic motor oils.

Want to know more? Read the FAQs (Frequently Asked Questions) for Street Applications. For more detailed and technical data, read the PS & MSDS (Product Sheets and Material Safety Data Sheets).

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Hot Rod magazine Endorses Royal Purple® Lubricants
"It occurred to us that we've yet to run a test with Royal Purple® oil that didn't result in a power gain—it might be a marginal gain (as with our little Acura Integra), but it's a gain.
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