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Old 03-26-2009, 08:25 AM   #3 (permalink)
almightybmw
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Join Date: Jul 2008
Location: Bozeman, MT
Posts: 248

Daily Driver - '02 Pontiac Grand Prix SE
90 day: 18.45 mpg (US)
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I always ran larger than stock on my protege. Did it help? who knows, but I know having more filter area allowed me to run synthetic for 5000 miles and not worry about the filter dying prematurely.

the real key it to find one with a similar bypass pressure. Too high or too low could (most likely will) damage your motor from not allowing oil through or letting particulates through, both harmful states.
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