Engine Oil Leak From PCV Vent Housing and/or Engine Inspection Plate on Mercedes-Benz ML350

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: 66,676 (41,000–92,353)
3 model years affected: 2003, 2004, 2005
5 people reported this problem
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Mine was described as "valve cover breather" both right and left leak oil. Didn't trust the dealership, Barrier (after ongoing failed steering fluid leak repairs) so I went to their ex-employees at Mercedes Garage. They replaces L&R valve cover gaskets, rebuilt upper chambers, replaced breather hoses."