I've been using Royal Purple products since I had a Harley engine failure with Mobil 1 in 2002. I've had no issues and use it in all my vehicles. At 60,000 miles I pulled my Harley Fatboy apart to go bigger cube wise. There was still cross hatch in the cylinders and virtually no wear on the piston skirts.
Verified purchase: Yes | Condition: New
The best money could buy. We owned a snowmobile and motorcycle shop. A rep from RP frequented our shop in Michigan up north and brought a ball bearing/weighted tester by one Saturday and we went through literally every oil on the shelf comparing it to RP. Royal Purple blew them away in every test we did! I highly recommend Royal Purple for any and all applications where oils are needed.
Verified purchase: Yes | Condition: New
great product, can run for many miles no break down, use nothing else
Verified purchase: Yes | Condition: New
been using Royal Purple products for years now and have had NO oil related issues !
Verified purchase: Yes | Condition: New
Great oil for your classic car for those "in the know" about oil products.
Verified purchase: Yes | Condition: New
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