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Testimonials

"Our Detroit 8V-71's and our Stork F240's have stopped smoking and they burn virtually no oil. The exhaust has cleaned up and the oil temperatures have dropped 5 to 10 degrees."
Thomas L. Kilgore
Port Engineer

"I thought you would be interested in knowing how Royal Purple cured an annoying problem and pending expensive repair on my 1985 Pontiac steering system."
Thomas H. Hock, P.E.

"Prior to using Royal Purple Synthetic Lubricants, our engines vibrated severely to the point where the Governor Control would drop the cycles causing light to flash and power surges."
Thomas Kilgore
Port Captain

"Recently I did a 16,000 hour inspection on two D-399 Caterpillar Engines. I was completely surprised at the condition of the main bearings, camshaft and cylinders. There was virtually no wear found in the engines."
Horace Groves
Assistant Superintendent

"Green Mowers ó we have accumulated an average of approximately 720 hours on these engines and have not had to change the oil."
Leighton Wong, Golf Course Superintendent
Royal Kunia Country Club

"When I tow the trailer my mileage is 11 MPG. . . . I now get 13.5 MPG." (18.5 percent improvement)"
Raymond J. Legros