Royal Purple
Royal Purple HPS Synthetic High Performance Street 5W20 Motor Oil - 55 Gallon
SKU: R022 37520
Description
Part #: 37520
Royal Purple HPS Series motor oil is specifically formulated to maximize performance and meet the demands of high performance and modified engines. HPS is recommended for vehicles no longer under manufacturer warranty and for those seeking a higher level of performance and protection.
Royal Purple HPS SAE 5W-20 High Performance Street Motor Oil
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Royal Purple |
| Part Number | R022 37520 |
Videos
What has royal purple done to my engine? Should you switch your oil to Royal purple? (Part 1)
Pennzoil Platinum Engine oil VS Royal purple HPS Full synthetic
![Royal Purple Vs Mobil 1 Motor Oil: Which One is The Best? [2025]](https://img.youtube.com/vi/N2aWNk9EKAI/hqdefault.jpg)
Royal Purple Vs Mobil 1 Motor Oil: Which One is The Best? [2025]
Is Royal Purple really worth all the hype? 5,100 miles with Royal Purple XPR performance racecar oil
Royal Purple 5000 Mile Results Are in - Let\'s Check It Out - Was it any good or Just Decent Oil
Is Royal Purple better than Amsoil? Let\'s find out!
Royal Purple Motor Oil Review 2025: Is It Any Good?!
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy