There is an oil leak around the oil pan from what I can tell. Is this a common leak? It seems to be leaking more. When I changed the oil last time, oil was covering the oil pan. I did have a radiator issue and the car overheated for just a minute or two. Just wondering...

Thanks, Lance

There are lots of places higher up where a leak will eventually find its way down to the pan. I'd take it to the car wash, spray off everything and get it clean and closely monitor it to find the source. Pan gasket is a possibility as is the turbo oil return tube.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Everything on W123s leaks oil, even things that don't have oil in them!

Rust proofing.

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1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

upper and lower oil pan gaskets are a very common leak. They can be agrivated by even changing the oil where you have to torque across the axis of the pan causing it to shift. If the sealing was marginal before, what is it going to be after a good wrenching? Lower one is a cheap fix, if you do change it you might as well get a new pan because they are so cheap anyway. The upper one is a mofo, expensive, and most of the time not worth changing.

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.