• Greater Wear Protection - depends on the protective oil film not breaking down under pressure, preventing sliding surfaces from coming into contact. The ASTM D-2782 "Timken O.K. Load Test" measures an oils ability to prevent wear under load. Other premium motor oil films break down under a 20 lb. Timken load; Royal Purple Motor Oil carries an 80 lb. Timken load… a 400% performance improvement. Royal Purple Motor Oil's super-tough film has extended engine life 300% or more in severe service.

• Greatly Extends Oil Drains - because Royal Purple Motor Oil withstands the effects of heat. Heat accelerates the chemical reaction of oil with oxygen in the air (oxidation). Motor oil thickens, forms lacquer and varnish deposits, and loses lubricity, which shortens not only the life of the oil but the engine as well. In the absence of contamination, oxidation is the sole measure of oil life. The US Bureau of Standards severe 360°F oxidation test measures an oils ability to resist oxidation breakdown. Royal Purple Motor Oil greatly exceeded the performance of other premium mineral and synthetic oils by up to 1000% in this test. Longer oil life in this test equates to longer drain intervals in service.

• Superior Corrosion Protection - Royal Purple Motor Oil's corrosion protection exceeds ASTM D-130 test requirements by over 6500%. It protects during operation and acts as a preservative oil during shutdown.

• Saves Fuel - Royal Purple Motor Oil's low coefficient of friction significantly reduces energy consumption.

• Increases Horsepower- Royal Purple Motor Oil increases horsepower and torque by up to 3% over conventional oils - proven by numerous engine dynamometer tests on racing engines.

• Keeps Engines Clean - Royal Purple Motor Oil keeps engines cleaner with natural synthetic solvency that will even clean deposits left by old oils. Clean engines, like new engines, perform better.

• Mates Engine Parts - Royal Purple Motor Oil "micro-polishes" engine surfaces allowing them to "perfectly mate". Mated parts allow engines to run smoother with increased efficiency for maximum performance.

• API Warranty Approved - Royal Purple Motor Oil is a fully approved oil that meets API warranty requirements and therefore will not void new car warranties. Royal Purple Motor Oil is compatible with other mineral and synthetic motor oils. Switching is easy. Drain old oil. Change the filter. Add Royal Purple Motor Oil.

• Will Not Harm Seals - Royal Purple Motor Oil has the same excellent seal compatibility as mineral engine oils.

• Affordable - Royal Purple Motor Oil outperforms other high performance motor oils, but costs less.

• Recommended For: GASOLINE four-cycle engines — DIESEL two-cycle and four-cycle engines.

Now you know what we mean by Royal Purple tough! Royal Purple users typically experience improved fuel economy and stronger engine performance. Royal Purple is a "race proven winner" in NASCAR, AMA/CCS, IHRA, NHRA (both auto and motorcycle), Superbike and IDBA competition. Racers credit Royal Purple as a major factor in winning races and in setting numerous world records. No other oil can match Royal Purple's performance… not in tests and not in your engine.