This was the 350sd I won at auction. Drain plug was overnight, stripped out the head (threads were fine). Had to use an extractor. We pulled the filter and I was wondering where the oring went. Then saw this









I don’t even know how previous owners squashed the ring that far. Filter cap bolts came off ok, didn’t seem overtorqued but who knows.

Don’t know how they got it that bad!

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)