michaelv978

Hi All,
I have 2014 E550 and I brought my car into the shop as I noticed some fluid under the engine where I normally park. After about 4 hours, the dealership called back and said all the o-rings with the oil cooler and turbo were shot. Granted the car is under warranty and it was fixed for free but this has me a bit concerned as the tech I was working with said this was common problem. I did some searching here and on the web and I really haven't heard or seen much about. Anyone else have this type of issue? I am wondering what else will start to fail that they commonly see.

kbob999

It's a common MB problem.
I replaced the oil cooler seals in my V6 diesel Bluetec (20 hours work), and in my C32 AMG V6 (2 hours work).
Valve cover gaskets are also prone to leaking, as well as the 5 speed transmission electrical connector.
Just a feature of the best or nothing!

Tom in Austin

What was your mileage when the O-rings needed replacement?

kbob999

50K on the diesel
130K on the AMG
Valve cover gaskets about 10 years...mileage doesn’t seem to change that.