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

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 74,195 (12,500–163,000)
5 model years affected: 2007, 2008, 2009, 2010, more2012
18 people reported this problem
Viewing 1 - 5 of 5 comments
oil leak from the top of the engine valve cover, dripping down to my garage ground.got fixed from the dealer
Problem just started with 163,000 miles. Oil drips onto manifold and smokes coming into the garage.
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.