THIS IS 6 CYL. 3.2 1993 300 SE.
I HAD THE ENGINE FLUSHED AND NOTICED THIS. I GUESS I NEED TO FLUSH THIS WITH SOAP AS YOU NOTED. BUT IS THERE OTHER SOLUTION THAN HEAD GASKET . OR THAT IS THE ONLY THING THAT COULD CAUSE THIS. THE ENGINE RUNS FINE IN ALL SPEEDS.

ARE THERE ANY OTHER SEALS THAT COULD LEAK OIL INTO COOLING SYSTEM? NOT VERY FAMILIAR WITH MB SYSTEM.

THANK YOU AGAIN FOR YOUR THOUGHTS.

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clayton