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Old 04-28-2005, 10:24 PM
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Need oil leak suggestions

My 1987 300 TD has an oil leak on the left side at the front of the engine.I replaced the front damper seal and that didn't solve the leaking problem. The oil is concentrated around the A/C compressor and below. Any ideas as to which seak or gasket it could be?


Ted Sierocinski

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Old 04-28-2005, 10:44 PM
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Join Date: Feb 2005
Location: Frederick, Md
Posts: 4,540
vacuum pump gasket leak?

1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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Old 04-29-2005, 02:32 AM
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Location: Palm Springs, CA
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Assuming left side means driver's side. Most likely the leak is comming from the oil filter housing gasket. I know the oil filter housing gasket is towards the rear of the engine, however the oil trickles towards the front, and drops towards the front. I had this leak on my 83 300sd and was prepared to replace the gasket. I read here on this great forum that simply tightening the bolts might fix the problem. It did fix the leak for me. I've read that the gasket replacement is a bit of a bear (tight and hard to reach).

However, if you are refuring to the passenger side, probably the turbo return seal (ooouuuuch). That job sucked so bad I can't even tell you. If it's the turbo return seal take it to an MB indie. Save yourself the massive headache.
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Old 04-29-2005, 07:19 AM
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Oil Leak

Is ther a flourescent die that can be added to the oil as a leak detector and show up under UV light?

Also thanks for those responses. I look into those sources.
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Old 04-29-2005, 08:10 AM
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Join Date: Dec 2002
Location: RI shore
Posts: 2,937
you don't need UV activated dye. Clean/degrease the engine thoroughly and you will find it.
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.
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Old 04-29-2005, 08:50 AM
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Join Date: Apr 2005
Posts: 22
Talking well when i bought my 300sd

dose it have a turbo if it dose it sound like it might be the return tube leaking
from the turbo it cost me about $3.00 to fix

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