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Title: The best oil I know of
Review: I have been using Royal Purple for two years now and have found it to be a great product. I run my Dodge Cummings HO diesel hard; when I have changed oil in the past I do so at 3-4000 miles, and you can both smell and feel the effects of running in the oil itself. Using Royal Purple I now change at 5000 miles. The stuff that I take out looks and feels like I could run it for thousands of miles more. So when found this stuff at a great price on Amazon; whats not to love? Buy this stuff, it works.
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