Engine Oil Leak From PCV Vent Housing and/or Engine Inspection Plate on Mercedes-Benz E320 4MATIC

An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the front of the engine.

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Average mileage: 44,000 (44,000–44,000)
8 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004, 2005
13 people reported this problem
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problem details
MB Mechanic said the same thing to me. But I don't know the impact this will have if not treated.
I have an wagon! I thought the head gasket was going but realized that couldn't be the case. It has to be the PCV housing. It's not much. I lose about a quart every 15,000 miles. But it's annoying. Sometimes it the oil drips on the hot engine and smells like it's burning oil.
noticed oil leak all over valve cover and coils. in process of taking apart looking for leak or leaks