E46Fanatics - View Single Post - Specifics about Seafoam DIY
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Old 10-21-2009, 03:45 PM   #7
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Join Date: Jun 2008
Location: Indianapolis
Posts: 1,404
My Ride: 2000 323i
You really only have to worry about your oil after this is if you put Seafoam IN your oil. In that case, try to change it within a couple hundred miles after. Also, Seafoam sometimes affects o2 sensors because of the carbon buildup that gets blown out of the engine, past the o2's, and out the exhaust (hence the smoke).
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