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Why Use Royal Purple?
Numerous independent tests and user testimonials document performance gains by using Royal Purple lubricants:
- Increased horsepower and torque
- Reduced wear
- Improved fuel economy
- Reduced heat
- Reduced emissions
Royal Purple outperforms synthetic and conventional oils primarily due to its proprietary Synerlec technology and its superior, synthetic base oils. Synerlec significantly increases oil film strength to dramatically reduce friction and improve combustion. This translates into more horsepower and torque, improved fuel economy and reduced wear, heat and emissions.
Royal Purple Synthetic Motor Oil and Lubricants
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Royal Purple's Customer Comments
“I just recently switched to Royal Purple oil. …I’ve noticed a difference in engine smoothness that’s difficult to describe. I’ve also noticed some power gain, gas mileage increases (though slight) and less valve noise. My car loves it. …Even though Royal Purple isn’t my sponsor, I still would love to have a decal. …I truly regret not doing this change sooner.”
—Keith Duber, Rosenburg, OR
“I installed Royal Purple in the motor of my 1994 Dodge 2500 Diesel approximately 2,500 miles ago. (Odometer reading 99,255 today.) The best mileage I have recorded to date has been 23.5 mpg with high speed interstate driving. On my first tank of fuel with combined …driving I calculated the mpg at 24.14! Additionally I noticed about a 20 percent reduction in noise level when running at 65 mph. …When it was cold, starting was the same as a hot motor. I am sold on the benefits of Royal Purple.”
—Ray Malarkey, Charlotte, N.C.
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Multiple independent university and automotive industry testing has documented these typical performance gains:
- Horsepower and torque increases of up to 3%.
- Fuel economy improvements of up to 5% or more.
- Reductions in emissions of 20% or more.
- Reductions in heat of up to 12%.
- Reductions in wear of up to 80%.
Performance gains will vary depending on the type of vehicle, its condition and the way it’s driven. Visit the independent test summary page to view specific test results.
Royal Purple currently offers many viscosity grades of API-licensed motor oils. To allow for proper break-in of the engine, Royal Purple recommends waiting until the manufacturer’s first scheduled oil change or a minimum of 2,000 miles in new gasoline engines. Allow 8,000 to 10,000 miles before using Royal Purple in diesel engines.
Royal Purple lubricants are fully compatible with mineral or synthetic oils. No special procedures are necessary when switching to Royal Purple.
Royal Purple recommends following the manufacturer’s maintenance intervals while the vehicle is under factory warranty. In clean engines that are no longer under warranty, oil change intervals may be extended up to every 12,000 miles or annually, whichever comes first. Oil filter changes should be done as recommended by the filter's manufacturer and oil should be topped off as needed.
In dirty engines, Royal Purple recommends the standard 3,000 to 5,000 mile oil and filter change interval until the engine oiling system is clean and free of deposits left by lower quality oils and / or poor maintenance or mechanical problems. This will allow time to gradually remove existing deposits without overloading the oiling system. Mechanical problems such as fuel dilution, coolant leaks into the crankcase, poor air filtration and / or failure to maintain proper oil level are all detrimental factors to the service life of any engine oil. Any one of these factors can significantly shorten the useful service life of any oil.
While no special oil filter is required, we do recommend upgrading to a high quality oil filter. A high quality filter will prevent contaminants from circulating through the system and causing damage. An oil filter's price typically reflects the oil filter's quality. We suggest researching oil filter manufacturer's websites for more information.
Properly formulated synthetic oils will generally not cause an engine oil leak. Synthetic oils possess a higher degree of natural solvency, which can clean and remove deposits left by previous oils. The removal of extensive oil deposits can expose marginal or damaged oil seals, which may then leak. If an engine currently has excessive oil consumption (i.e. greater than 1 quart / 1,000 miles) the recommended course of action is to solve the oil consumption problem before switching to a synthetic.
We strongly recommend against using any oil additives as do most automotive manufacturers. Engine oils are formulated with a fine balance of additives (anti-foam, corrosion inhibitors, anti-wear, detergent / dispersants, oxidation inhibitors), and more is not necessarily better. The use of an oil additive could upset the balance resulting in reduced performance.
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