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.Google+
Car Problem Reports
Mercedes-Benz CLK320 Oil May Leak From PCV Vent Housings and Inspection Plates
Mercedes-Benz CLK320 Problem
Average Mileage: 103,818 mi (40,000 mi - 222,000 mi)
Visitor, 1999 Mercedes-Benz CLK320, 175,000 mi
Kept smelling burning oil every once-in-awile. Researched and visually observed very small seepage from the inspection plate while car was running. Did not seep while engine not running. Bought the gasket online for $10. 30 minutes labor in my driveway. Spilled about a half cup of oil when I removed the plate. Smelled burning oil for a while afterwards because the oil leaked down into every crevice possible. No smell for almost a year now. Oil level constant
Change the head gasket cover the driver side is leaking oil
Visitor, 1999 Mercedes-Benz CLK320, 119,000 mi
Small oil leak in front of engine problem not resolved
Visitor, 2005 Mercedes-Benz CLK320, 40,000 mi
Just had our 2005 CLK 320 serviced for 1) oil change and 2) brake fluid changed, and the shop stated the following:
"PCV PLATE RE SEAL NEEDED $175.00 (PCV PLATE IS PLUGGED UP AND LEAKING OIL"
Wondering if this is something I can do myself. Appreciate any advice on this.
Oil leaking from valve cover area - relatively minor leak, but some smoking. About $320 to fix.
Visitor, 2004 Mercedes-Benz CLK320, 75,000 mi
told it was a cracked valve gasket cover