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Old 09-19-2007, 08:52 PM
Join Date: Sep 2007
Posts: 2
Default E320 Oil Leak

Hello Everyone,
I just bought a really clean one owner 1994 E320, however it has a problem. It has a oil leak on the front passenger side of the car, coming from above the alternator bracket. I took it to be fixed and $269 later it is still leaking in the same spot. The mechanic that worked on it, charged me for a new valve cover gasket and upper timing cover gasket. What am I missing here? Is it common for this car to get a headgasket leak in this area?
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Old 09-19-2007, 09:13 PM
Join Date: Sep 2006
Posts: 64
Default RE: E320 Oil Leak

This might shed some light on your issue:


Mine leaked too. Dealer fixed years ago. Still dry!
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Old 09-21-2007, 09:38 PM
Join Date: Sep 2007
Posts: 2
Default RE: E320 Oil Leak

Big Dog,
Thanks for the reply! I should have mentioned that I had the upper timing cover gasket replaced earlier this week. I however was enlightened today by a mechanic with 30+ years MB experience. Here is the story:
Between 1993 and 1997 the E320 with the M104 straight six was produced with a head gasket that was inferior and usually started to leak between 80 to 120K. The normal spot for the oil leak to occur is at thepassenger side of the head at the "C" shaped area where it meets the upper timing cover. It can also start to leak in the passenger side rear corner. Mercedes has a all new gasket design with steel inserts that corrects the old design flaw. I am told it will never leak again once replaced with the new gasket. Sooo. I am rounding up the parts and preparing for a weekend and week of evenings to do the job. I would have been thrilled if it was just the upper timing cover. Btw.. This same gasket was on the 2.8and alsoon theC class from 94-97 and S class from 92-99. Wish me luck with the repair job. I hardly have the wiring harness out of the way and I already miss driving it.
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