So my 82 300CD uses no oil. I drove it cross country and it didn't drop a bit on the dipstick.

The car has been sitting for about a year because I've been working on the rear regulators but have not had enough time working on them.

I looked underneath tonight and saw a "fresh" (no idea how long it has been dropping) oil stain under there which wasn't there when I parked it.

My take is that it is dripping off the two bolts that stick down where the downpipe off the turbo comes to the bottom of the car to mate to the exhaust.

But where is it coming from and why? The car has not run since I parked it. It has a seasonal thermal cycle set of course. The turbo always showed a tiny bit of oil in its intake impeller. The dipstick doesn't show a real drop in oil level.

Any ideas?

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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)