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      01-03-2021, 06:10 AM   #3
Second Lieutenant
KennyP's Avatar

Drives: 2009 Havana E89 Z4 Sdrive35i
Join Date: Apr 2016
Location: Estonia

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Its probably valve cover or valve cover gasket. If you have warranty try to get new valve cover with new gasket.

Its very common for the gasket to fail and these plastic valve covers can develop cracks.

So its better to change the whole cover not just the gasket.

If this leaking gets really bad and seeps into sparkplug holes it can mess up coilpacks and cause misfires etc.

With new valve cover you get new pcv valve aswell as it is built into it.

New oem cover with gasket and bolts cost around 400 eur. Its rather easy to change, My indy shop did it in a few hours as i had mine replaced a few months ago. Had a tiny bit of oil residue on the cover... wiped it a few times but it came back and engine cover had oily spot underneath on the foam. Also gasket can leak from the back of the engine at the lower corner of the valve cover and drip down from there. Hard to notice that one.
I did not notice any huge oil loss but i did have to add oil once.

Do you have any oil smell in the cabin? Like when stationary and engine warm?
2009 35i DCT Havana brown with ivory white interior. Mods: Cobb stage 1, BMS DCI, KW V3 suspension, M3 front control arms, Michelin Pilot Super Sport tires.
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