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Old 02-05-2013, 11:26 AM   #11
jdzumwalt
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Join Date: Sep 2012
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Quote:
Originally Posted by Dave-ROR View Post
That test would apply anywhere an EP oil is needed, such as a differential. Of course, they didn't test gear oils so the data from the article isn't too useful.

RP just has EP additives in their oils, worthless for an engine, but it makes them look good when people do testing like that. Slick 50 and various other snake oils did the same testing on TV ads back in the day.
Royal Purple has been in my offraod Turbo charged 22re with sustained 250+ temps at 15+psi(4+hrs no cool down) with no loss of a bearing or major engine failure.

The Bearing's look great upon teardown and the piston where able to be reused. Say what you want but that stuff coats the engine. I've seen it with my own eyes.
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