Thread: p1030 ?????
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      07-28-2009, 01:30 PM   #2
deathsightx
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Drives: 2006 330i
Join Date: Jul 2009
Location: Ohio

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I'm new to this site but I thought that the engine took 5W-30 syn. I dont know if this would have anything to do with your rough running but with the way the engine controls your idle different oil may mess with it? Its a long shot but if you end up taking it to the dealer I wouldn't mention that you used 5W-20 cause it just gives them a reason to not take the complaint seriously. Also check to make sure your oil filter is tight and that you properly replaced both o-rings.