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#2
01-23-2007, 09:42 AM
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It helps if you tell us what model and year the vehicle is, and the more detail the better the chance you will get more than a bunch of guesses or no responses at all.
If you have a car with a turbo, there is an oil supply and return line to the turbocharger bearings, and the supply is pressurized by the engine oil pump. It is not unheard of to have the pipe on the return wear the seals at the reentry point to the sump. I have never owned a W123 turboDiesel, so I have not done this repair, but I have read about it on this site. Do a search on the subject of turbocharger oil return line seals or the like. While likely a dirty, messy job, I don't think it is really complex. I also believe I have read of the return pipe itself being damaged and needing to be replaced. If you are talking about the 240D oil/blowby gas separator, I believe the leak should be less of problem, but the answer is the same. I have even heard of dipstick tube seals failing at that point and leaving a mess. Good luck and I hope this helps. Jim
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Own: 1986 Euro 190E 2.3-16 (291,000 miles), 1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000, 1988 300E 5-speed 252,000 miles, 1983 240D 4-speed, purchased w/136,000, now with 222,000 miles. 2009 ML320CDI Bluetec, 89,000 miles Owned: 1971 220D (250,000 miles plus, sold to father-in-law), 1975 240D (245,000 miles - died of body rot), 1991 350SD (176,560 miles, weakest Benz I have owned), 1999 C230 Sport (45,400 miles), 1982 240D (321,000 miles, put to sleep) 
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#3
01-23-2007, 10:16 AM
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yeah, knowing what you are working on will help us figure out your problem.
it could be the oil breather return line under the air cleaner is needing new seals too... come back... John
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
01-23-2007, 10:55 AM
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Try a search for turbo oil drain. There is a grommet down there, but it is a pain to get it apart. I'm cutting out the middle of that tube today and replacing it with some hydraulic hose to fix my leak and make future servicing easier.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#6
01-23-2007, 11:16 AM
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That fix, changing a hard line to a flexible line, may just make the grommet life get better. The turbo is hung from the exhaust system, I believe. The exhaust is attached to the head and the body, which which don't always move in concert with each other. This need to take up the slight motion between the hard pipe, turbocharger body, exhaust manifold and sump is taken up by the grommet as the engine rocks around. A soft section in the middle of the line might make the grommet life easier. The consequence of a failure might be worse though - you could just pump the engine oil out on the ground while driving, for instance, if the hydraulic hose fails while a grommet failure only lets a portion seep on the ground, where it is noticed before it causes an engine lubrication problem.
Good luck, Jim
__________________
Own: 1986 Euro 190E 2.3-16 (291,000 miles), 1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000, 1988 300E 5-speed 252,000 miles, 1983 240D 4-speed, purchased w/136,000, now with 222,000 miles. 2009 ML320CDI Bluetec, 89,000 miles Owned: 1971 220D (250,000 miles plus, sold to father-in-law), 1975 240D (245,000 miles - died of body rot), 1991 350SD (176,560 miles, weakest Benz I have owned), 1999 C230 Sport (45,400 miles), 1982 240D (321,000 miles, put to sleep)
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