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      08-08-2012, 07:48 AM   #8
Surly73
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Drives: 2007 E90 328i 6MT sport/prem
Join Date: May 2012
Location: Oakville, Ontario

Posts: 722
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I still think it's the cap and/or it's coming from that vent hole.

There could be something going on with a blockage of the internal filter, or something else causing the level to be higher than normal.

Try:

- cleaning it up
- replacing the O-Ring
- insert a Q-tip into that vent hole you can see in the cap and break it off so that there's still enough stalk to pull the Q-tip out. This allows it to vent but dramatically reduces the changes of liquid coming out.

From what I see, I don't think this is coming from anywhere else upwind of the reservoir - I see it all the time on BMWs.
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