Is a special oil filter required when using Royal Purple?
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.
Royal Purple now offers extended life oil filters.
Where do I find Royal Purple products other than motor oil?
A number of retailers provide us with a listing of the products they regularly stock. You can find this information on our distributor locator page. Many of retailers will special order products that they don't regularly stock. Royal Purple Australia stocks the complete range of Royal Purple products and ships twice daily from our Sydney warehouse.
Can your motor oils be used in older engines?
Yes. Kilometres and/or age is not a factor when used in a mechanically sound engine. In high-kilometres applications, we do recommend running a minimum of two short (5,000Km) intervals before extending the oil drain intervals.
This will enable Royal Purple’s high solvency to remove existing deposits gradually; such deposits can restrict oil flow, if excessive, as well as reduce the oil service life significantly.
Should I use an oil additive with Royal Purple?
No. 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.
Is Royal Purple synthetic motor oil?
Yes.Royal Purple Motor Oilsare composed of a proprietary formulation of synthetic base oils and synthetic additives containing iso-paraffinic diluents.
Does Royal Purple maintain its purple colour after it’s put into service?
No. The dye that’s used to colour the oil dissipates shortly after being put into service. The colour will turn brown at some point.
Do your motor oils contain zinc and phosphorous?
Yes. All Royal Purple engine oils contain the zinc/phosphorous compound zinc dialkyl dithiophosphate (ZDDP) and are suitable for both roller and flat tappet valve trains.
Can your oil be used with flat tappet cams?
Yes. For stock or mildly modified flat tappet valve trains (<.525” lift), we recommend our SAE 10W40 or 20W50 engine oils. In applications with flat tappet valve trains using high-lift cams and/or high RPM applications, we strongly recommend upgrading to our XPR line of engine oils as these have an even greater concentration of ZDDP providing excellent protection with the higher spring pressures. For a viscosity recommendation, please contact us.
