Street Applications

Why Should I Use Royal Purple?

There are a variety of reasons to use Royal Purple, including increased horsepower,improved fuel economy, a cleaner engine and fewer emissions, reduced wear, reduced oil consumption, improved corrosion protection, and ultimately a longer lasting smoother and cooler running engine.

Why Is Royal Purple Better Than Other Oils?

The superior film strength, created by Synerlec technology in our oils, means that it offers 4 to 5 times better metal to metal protection than other oils, petroleum or synthetic.

Are Your Products Compatible With Other Petroleum Or Synthetic Based Oils?

Yes. Royal Purple lubricants are fully compatible with all currently available petroleum, petroleum/synthetic blends, or full synthetic blends.

If Your Street Products Are Not 100% Synthetic, Why Are They Priced Similar To A Full Synthetic?

The Synerlec technology provides the best protection and performance increases available, however, it is very expensive. We have blended our street oils to exceed the performance characteristics to any other blended or "Full" synthetic. If having a full synthetic is important, we have our racing line which can be considered a "Full" synthetic.

How Often Should I Change Royal Purple In My Passenger Car?

If you vehicle is under manafacturer's warranty, we recommend following your manafacturers recommended oil change interval. If your vehicle is not under warranty, we recommend changing Royal Purple approximately every 10,000 - 12,000 miles. However, we recommend to continue changing the filter every 3000 - 5000 miles to maximize the accumulation of dirt, fuel and water.

Can I Put Royal Purple Into My Brand New Car?

We recommend switching to Royal Purple after the manafacturer's first scheduled oil change. This allows the engine time to break-in (seat the piston ring to the cylinder wall).

Does Royal Purple Meet The Manafacturer's Requirements?

Yes. Royal Purple is "API Warranty Approved", so it meets or exceeds the requirements of manafacturer's new car warranties.

I Live In Cold Weather, What Is The Pour Point Of Your Oils?

The pour point of all our SAE grade oils is less than 30F and varies from oil to oil. This should be more than adequate as ambient temperature does not get that cold and wind chill does not effect motor oil.

Will Royal Purple Cause My Engine To Leak?

Royal Purple will not cause an oil leak. In some instances, usually in older engines, there may be a bad seal or cracked gasket that is not leaking because it is filled with oil sludge, lacquer and varnish deposits. Synthetic oils are designed to carry away deposits, so it is possible to expose marginal seals after those pre-existing deposits are removed. If an engine leaks after putting Royal Purple or any other synthetic in, the oil is probably not causing the leak, it is exposing an existing leak. In these cases or in older cars where this may be a concern, it may be best not to recommend a very lightweight oil. In the long run, it is better to replace a faulty gasket than to leave those deposits in the engine.

What Will Putting Royal Purple Into My Older Car Do For Me?

Royal Purple will breath new life into older engines. The polishing characteristics of the oil will help smooth out the cylinder walls and bearing surfaces. The film strength of the oil will help increase fuel mileage and keep the engine cleaner resulting in reduced admissions, a big benefit to older cars.

Should I Use An Oil Additive With Royal Purple?

No. We are constantly testing and have yet to find an additive that enhances the performance characteristics of Royal Purple. In fact, several of the additives, when added to our products can result in decreased perfomances rather than performance gains as claimed.

What Should I Use For A Manual Transmission Fluid (MTF)?

As always, if your car is under warranty, we suggest following your manafacturer's recommendations. In most passenger cars we recommend using Royal Purple Max Gear 75W90. Some people may want to use something lighter, in which case, our ATF or Racing 41 would be good suggestions. Racers may even want to run Racing 21 which is fine. Many new cars now use ATF or engine oil.