I'LL say it one more time, then shut up and quit trying to get your attention:
There have been several failures one of which I looked at real time. On some W22 chassis around 2002-2004 or so the engine oil cooler lines were getting loose and making contact with the drivers side engine mount. The mount vibration will eventually gnaw through the tubing and start a fine spray of escaping engine oil. Eventually worse leakage and engine failure can occur if the problem is not addressed quickly.
Have a nice day. :) Bob