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To answer your specific question, we have used Royal Purple racing oil in our Grand Am Cup AUDI S4's, our SCCA AUDI TT's, and our KONI Challenge TT...since 1999 with zero problems
Don Istook
Istook's Motorsports
(817)332-6547
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Vehiport - New Club Member Discount
32.69%
Royal Purple Synthetic Oil
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