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Message: <blockquote data-quote="2slo95fiveoh" data-source="post: 181882" data-attributes="member: 8966">i used to use mobil 1, and it worked great, but my motor was a little tired and it used a little bit of oil. when i got a new motor, i switched to royal purple, and i dont think i will use anything else. although, this is not confirmed, but a friend of mine told me that an independent labbroke down the ingredients of both royal purple and mobil 1 and found out that it was exactly the same thing, only purple dye in the r.p. i dont know how much i believe it, because you can't believe everything you hear, but all i know is i will still use royal purple, because who knows? maybe te purple dye adds 10 horsepower?? haha :hammer:</blockquote>