During today's oil change, I removed the filter (Hengst) and found that the metal portion of the filter had dramatically collapsed inwardly. The paper portion appeared normal. I called the Mercedes shop and asked if they may know may have caused this, but they did not know. I use 15W-40 oil, same as usual.

I remember someone mentioned that on the oil filter top there is a hole in the stem. Is this a valve that only works in one direction or just a drain hole? When I put some air through the hole, it is not clogged up.

Has anyone had this happen before? The Mercedes shop says put a new filter on, watch the oil pressure, and check the filter in a week.

Any help would be appreciated.... Joe

Mercedes 1984
300D Turbo
155,600 miles