“After using almost every type of conventional motor oil out there, I heard of your products through a friend.

After one oil change I immediately noticed an increase in power and gas mileage in my 2000 Ranger 3.0.

…All I know is that the only oil that has proven itself to me is Royal Purple. Since then I’ve started using the gear oil in my differential. It has performed outstandingly.”

—Gary Mamiya, Waianae, HI

“It takes a lot for me to be surprised and awed by a product claim, but Royal Purple got me. Today I changed the oil in my ’68 Chevy truck and …WOW!!! …I never dreamed it would be an instant change.

…The noise level was considerably lower, and the engine did not sound like it was straining and was much smoother …I am amazed and so is my truck. You were right and I thank you.”

—Leonard Krisman, customer