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Old 04-27-2008, 10:12 AM   #85
xi_ter
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Join Date: Nov 2006
Location: Edmonton, Canada
Posts: 2,221
My Ride: 2003 325xi
Drive it for a week, after a Seafoam treatment it's common for O2 sensors to foul. After a week of driving the residue that is fouling the sensors will usually burn off. +1 on doing an oil change. Seafoam releases engine deposits/ gumming into the oil.
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Last edited by xi_ter; 04-27-2008 at 10:14 AM.
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