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  • [Thread] [Post Followup] [Post Picture] [Search Forums] [S4 / RS4 (B5 Platform) Discussion]
    Not true.
    Posted by: Innovator on 2002-01-21 22:49:09
    Account #: 4461

    In Reply to: Be careful. Even Royal Purple will tell you their "racing oils"... posted by OpusK551 on 2002-01-21 22:41:53

    The racing oil, like 21 is pure synthetic, and has more additives. The regular RP oil is a blend.

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