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Old 10-16-2012, 07:07 PM
BigJon53 BigJon53 is offline
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Location: Michigan
Join Date: Jan 2012
Posts: 75
Mein Auto: 2009 335i Coupe
Originally Posted by elmachin View Post
Has anyone seen this before or know the cause of oil coming out of the rear O2 sensor.

It's a E46 99 328i

I can see the picture, but it is too bright in the area you are trying to show. I think Smolck is right, that is right in the area where you are going to see oil from the valve cover leaking. It falls on the manifold and burns off. The oil that falls on the O2 sensor just may not be burning off, so it only looks like it is leaking oil. If you really have oil coming from the O2 sensor, you have got way bigger problems.
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