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Old 06-22-2019, 11:54 PM
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Join Date: Dec 2005
Posts: 2,298
617 turbo motor , leak hard to pinpoint

Iíve completed a lot of the regular oil leaking points with new gaskets or grommets.The Turbo gasket kit Iíve installed solved a lot of the oiled problems, new oil pan gasket helped a lot and I was oil dripping free for about 6 months .It looks like mid block near the turbo , any ideas ?
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Old 06-22-2019, 11:56 PM
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Join Date: Dec 2005
Posts: 2,298
To add , the valve cover is newish ,1 yr , and Doesnít seem to be an issue.
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Old 06-23-2019, 02:46 AM
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Join Date: Oct 2004
Posts: 132
Oil filter housing gaskets- another common oil leak site. But thatís on the other side of the engine.

BTW, for what itís worth, a reliable source has told me that Elring valve cover gaskets are OE, and are less likely to leak than Reinz gaskets. Our site sponsor carries the Elring gaskets.
Marshall Welch
Seattle, WA
1982 300D-T
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Old 06-23-2019, 07:54 AM
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The engine has been well cared for by me for the last 9 yrs , it must be approaching 450 k ,daily driven between three other w123s , always chasin oil leaks and like to be thorough but this seems to be a block leak , I cleaned that side when I had the turbo , will have to exit the turbo again to really get a look , itís a super slow drip wherever itís coming from , wonít be satisfied till I ring out , a little grimlin leak .
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Old 06-23-2019, 10:13 AM
Join Date: Apr 2019
Location: Victoria, TX
Posts: 17
I had a similar issue with leaks on our 1980SD. Oil was seeping from the oil cap, valve cover, and intake tube area. The waste gate hose was disconnected and cracked. After repairing it, all my leaks went away.
John V
1979 300D
1980 300SD
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Old 06-23-2019, 11:35 AM
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Join Date: Sep 2007
Location: Long Beach,CA
Posts: 28,294
After degreasing the Engine and related areas you should be able to visually locate the leak.

Some of the skinny tubes that go from the Air Filter Housing down to the breather drain nipple on the upper oil pan have a welded tab that a bolt goes through (below the turbo through a metal strap) to steady the tube. They can crack around the weld and leak or the ones that have a metal piece as a clamp can vibrate and wear a hole through the tube ant it leaks.
84 300D, 82 Volvo 244Gl Diesel
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Old 06-23-2019, 06:29 PM
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Join Date: Sep 2006
Location: Middle TN
Posts: 3,613
Leak-Free 617:

Pulling the passenger side down to the long block took care of most. Some have come back.
85SD 240K & stopped counting. 84SD 180,000. Thinking of painting both.
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