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#45: 10-27-2010, 08:58 AM
 
 fishbone
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Title: Smooth like Keith Stone
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After reading some more, it seems to indicate that the high bypass setting is related to more flow resistance by the Subaru filter itself. I cannot explain any other way why the PureOne did a better job filtering the oil than the old black OEM filters did, even in the dead of Nebraska winters. If it ain't broke, don't fix it, therefore I am going to listen to the UOAs and stick with PureOne.