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Originally Posted by Finnattic
Here's a recent analysis of Royal Purple 5w30,4050 miles,03 5.3 Silverado that shows RP not thinning out and staying strong after over 4000 miles.
I'm not saying it doesn't thin out after normal change intervals. What I am saying is this particular analysis shows the opposite. It's nice to see a recent good analysis after over 4000 miles of RP.
http://theoildrop.server101.com/cgi/...c;f=3;t=002419 |
The copper looked a little high. I think the thread that your link points to pretty much sums up that RP just isn't a very good oil in comparison to other oils. Especially for the high price that RP wants for an inferior commuter oil.