as an engineer and a preventative maintenance freak i have become a firm believer in the use of synthetic lubricants. my question is has anyone tried royal purple and is it worth the 6 bucks a quart vs mobil ones 4.5 bucks a quart?? royal purple makes some pretty big claims in their advertisement sheet. does any of them hold water or are they just a gimic?? tell me your real world results and dont be afraid to get technical with this skeptical engineer!!!!!
2006-11-10
16:27:43
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7 answers
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asked by
Anonymous
in
Cars & Transportation
➔ Maintenance & Repairs