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#1
09-20-2006, 11:07 AM
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560 Oil Leak
The 86 560SEL has been leaking a little oil for a good while. When I was under it the other day, trying to see why I was loosing a little P.S. fluid (looks like a pressure line), I notice that the sump oil pan (the little thing with the drain plug in it) was leaking. Is this a common problem with these models? Also what would cause a small ATF leak, other than the pan gasket (which was just replaced)?
Thanks, Dave.
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Currently Driving: 1986 Mercedes Benz 560SEL 1994 Lincoln Town Car 1994 Cadillac Deville 1985 Lincoln Town Car- Retired  The Official Car of a Realtor- Lincoln Town Car The Official Car of the Successful Independent Insurance Agent- Mercedes Benz S Class 
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#2
09-20-2006, 12:44 PM
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oil leak
the power steering leak is going to be a return line [common] try replacing clamps otherwise replace short hose and clamps.the lower oil pan gasket tends to leak at all the small bolts.try tightening if not successful replace lower pan gasket during an oil change.while you have pan off two other things to do [1]up on right side of block[only accessible with pan off] is oil level sending unit.remove clip from outside and push in pull down and replace both o rings[if it doesn't leak now it will] [2] take the rubber protector off the oil pump pickup and clean the screen. one more sugg either hammer out the lower oil pan or replace it[they are cheap].
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#3
09-20-2006, 12:56 PM
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Work from the top down - the valve cover gaskets can, and do, leak when they get old, shrunken and hard. Mine leaked from the back, and made it seem like something was leaking under the engine. It's very important to torque them properly with new crush washers when installing new gaskets.
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86 560SL With homebrew first gear start! 85 380SL Daily Driver Project http://juliepalooza.8m.com/sl/mercedes.htm
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#4
09-20-2006, 02:09 PM
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Well, I replaced the Valve Cover gaskets at the last oil change, and will replace the lower (sump) oil pan gasket at the next one. I'll try just redoing the clamps first on the ps line. When you spoke of replacing the O-Rings on the Oil Sending Unit, is that something that must be done with the entire crankcase oil pan removed or just the sump? Or must you remove the crankcase pan to get the sump off
 ?Thanks, Dave.
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Currently Driving: 1986 Mercedes Benz 560SEL 1994 Lincoln Town Car 1994 Cadillac Deville 1985 Lincoln Town Car- Retired The Official Car of a Realtor- Lincoln Town Car The Official Car of the Successful Independent Insurance Agent- Mercedes Benz S Class
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#5
09-20-2006, 03:20 PM
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oil leaks
just remove the lower pan.the level sender is on the right side of block down near the bottom where the main oil pan joins to block.you have one small and one large o ring.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#6
09-20-2006, 05:53 PM
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If its just the P/S return line, be happy. If the gearbox leaks, not only is it expensive, but the leaking fluid will eat the subframe bushing as well.
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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein 09 Jetta TDI 1985 300D
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