2007 Mercedes-Benz GL450 Q&A
2007 Mercedes-Benz GL450 Question: Oil Leak
There is an oil leak at the end of the valve cover facing the rear of the car. There appears to be a black plastic round cover about 1 1/2" in diameter where the oil leaks around. Anybody know what that is? Is it just a plug of some kind? Part of the valve cover gasket? - bobbynewman
I had a similar leak and it was the cam plugs. I had them replaced and no more leaks. - Visitor
An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the fr...
An engine oil leak may develop from the oil level sensor. Replacement of the leaking sensor will commonly correct...