August 17, 2018

Is it true that your oils lose their performance edge after six or eight passes? (Drag Racing)

No. Royal Purple has not found any evidence that it shows deterioration in performance after being subjected to race conditions. Excessive fuel dilution may effect the […]
August 17, 2018

My retailer doesn’t carry XPR – why can’t they order it?

We do not restrict any automotive product from any retailers that carry Royal Purple consumer products. Any lack of availability of Royal Purple products at local […]
August 17, 2018

What is the difference between your API-licensed motor oils and your racing oils?

Royal Purple API-licensed motor oils are formulated to provide unparalleled performance and protection while complying with API and ILSAC specifications. XPR and Nitro Plus racing oils […]
August 17, 2018

How will running your product affect my oil temperature?

In most cases, vehicles with properly functioning cooling systems can reduce oil temperatures by 5-20°F by using Royal Purple.