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Thoughts & Opinions on PennGrade High Performance
It looks like the last time my mechanic did an oil change on my 83SC 911 he used PennGrade High Performance Oil SAE 20W-50 Partial Synthetic oil (is this the same thing as Brad Penn?) and a W 940/29 Mann Filter. Any thoughts or opinions on these? Should I go ahead and just use the same thing for my oil change I will do myself?
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