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Is it true that Royal Purple oils lose their performances edge after 6 or 8 passes?

April 26, 2017lose Oils passes performances Purple Royal

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Is it true that Royal Purple oils lose their performances edge after 6 or 8 passes?

1 Answer

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No. We have found no evidence that Royal Purple oils show deterioration in performance after being subjected to race conditions. It is possible that fuel dilution contamination may start to hinder the performance of the engine oil. However, dyno results do not support this claim.