Mercedes-Benz ML350 Problem Report

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

(6 reports)

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.

Oil leak had to replace breather part on back of head -
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." -
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