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Old 09-22-2009, 03:25 AM   #4
Flavor 987S
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Join Date: Jul 2009
Location: Arlington Heights, IL
Posts: 1,561
Royal Purple is NOT a Porsche approved oil. I hear it is an excellent product, though, and may try it in the future. I am currently using Red Line.

But, only Randal is using the proper Porsche approved viscosity. I would never use a 5W30 in a Porsche engine, and is not an approved viscosity. 10W40 is not approved either, but a safer choice. You will probably notice more lifter chatter on cold start-ups.

And this statement from Violametallic, "... So im assuming this is a good thing and the oil is cleaning out the internals of the engine, am i correct?" is certainly NOT a good thing. You have other issues going on that need fixing.
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