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Registered User
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 9,232
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I use Swepco but I've heard very good things from racers using Royal Purple in light weight formula boxes that are prone to failure with other oils.
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
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