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I have always gone with Castrol, and @ 180,000 miles the recommended 5-30 still works just fine. And I change based one how dirty the oil is not really on mileage, usually anywhere from 3-5k. Your oil is your engines blood, ide rather err on the safe side then try and push it ya know.
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70 mpg or die modding
www.full-race.com
Quote:
Originally Posted by MetroMPG
looking forward to seeing what kind of uber-sipper slinks out of the full race skunkworks.
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