anyone here try Royal Purple synthetic? (archive)
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Posted by frayed on October 29, 2000 at 20:34:48:
(posted from: cs2736-196.austin.rr.com (24.27.36.196))
Just curious. Some of the folks at the S4 boards really like the stuff, and claim improved gas mileage.
I'm a bit hesitant, though, as the Royal Purple site has dyno runs showing, in some cases, incedible results over regular dino oil. On the order of 10 hp gain.
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