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Engine Engine/transmission and other oily matters

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Old 03-03-2016, 08:08 PM   #1
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W212 e350 cdi - oil leaking - suspect crankshaft oil seal ?

Hi All has anyone had this issue on there E350CDI ?

All of a sudden Had a breakfast bowl size puddle of oil on drive the other day , took to a friends garage stuck on ramp and he suspects the gearbox will have to come out and reckons its the crankshaft oil seal !! Madness on a car that's barely covered 65k

Some pics below , would really appreciate if anyone else has had or knows of this happening before and costings for repair etc












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Old 08-03-2016, 03:28 PM   #2
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Bump - Nobody ???
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Old 08-03-2016, 04:02 PM   #3
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Hopefully someone may come up with a better answer, but I have a feeling someone on here had a leak from the back of the engine which looked like a c/s oil seal failure but was equally difficult to get to! Sorry can't be of any more help.

Might be worth asking the same question on t'other side.

Ernie
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Old 08-03-2016, 04:34 PM   #4
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Tbh there is oil at the front of the engine to, Wouldnt had thought it had blown up to the front?

You sure the oil filter housing is not leaking? or oil been spilt?
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Old 08-03-2016, 08:54 PM   #5
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More likely to be oil cooler seals in the valley of the vee if you ask me
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Old 09-03-2016, 06:04 PM   #6
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Thanks for your input guys will get the Garage to look into these points , also any further help would be much appreciated

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Old 09-03-2016, 06:16 PM   #7
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I don't believe in miracle cures for stuff like this generally, but before you have it pulled apart I'd definitely try an oil seal expander. I used it on my old van in both the engine oil and steering fluid and it cured it permanently. It just gives any old rubber seals a new lease of life. Worth a try for the sake of a tenner...
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Old 09-12-2016, 08:18 AM   #8
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Hello, I live in Germany and I have the same Car and the same problem ;-) , Could you please explain me what you did to solve the problem and what was the problem? And was it time consuming and how about the price? Thanks in advance!
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Old 10-12-2016, 10:44 PM   #9
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Before you spend loads of cash try this, it works

Wynns Engine Stop Leak 325ml
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Old 11-12-2016, 11:57 AM   #10
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They do say that the oil coolers are known to be problematic. Not too expensive but a sod to get to right down in the vee.
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Old 11-12-2016, 02:21 PM   #11
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I think your car is recent enough to have the new (purple) seals for the oil cooler, so that may not be the problem. It's a lot of dismantling if it is:
A journey into the the infamous Om642 oil cooler leak! - PeachParts Mercedes ShopForum

Before any major tear down work, I'd be more inclined to look at things like crankcase breather in case it is pressurising the crankcase and putting excess pressure on the seals.
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cdi, crankshaft, e350, leak, leaking, oil, seal, suspect, w212


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