Engine Oil Leak From PCV Vent Housing and/or Engine Inspection Plate on Mercedes-Benz GL450

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: 66,122 (12,500–150,000)
5 model years affected: 2007, 2008, 2009, 2010, more2012
17 people reported this problem
4 people shared problem details
oil leak from the top of the engine valve cover, dripping down to my garage ground.got fixed from the dealer
Was told of the oil leak behind the engine during a regular service repair/inspection.
leak from PCV causing smell of smoke
oil leak , wet hoses, going to bring back to dealer under warranty.
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