Where is the oil cooler on a Mercedes BlueTec?
Bottom of oil cooler. You can see the location for the seals on each end of the cooler. As we stated above, engine oil cooler leaks are a common issue with certain Mercedes BlueTEC diesel cars. Specifically, the Mercedes “3.0 liter V6 diesel” engines, designated with the engine code “OM642”, are the afflicted units.
What should I do if my Mercedes oil cooler leaks?
Once the seals start to leak slowly the rate of leak will increase very fast. You may not initially get oil stains when parked as Mercedes models come with a fairly large undercarriage cover (aka belly pan) that can collect a significant amount of oil before it leaks over. Repair involves replacing the two seals on the oil cooler.
Why does my Bluetec engine have an oil leak?
The combination of 130,000kms, oil cooler leakage and oil return for the turbo leaking in a large SUV in fact suggests driver operation under heavy loading for extended periods. It’s clear you either drive it like a commercial truck or a rally car, routinely sending oil and impeller temperatures through the roof during normal operation.
What kind of engine has a leaking oil cooler?
Mercedes-Benz BlueTEC – Leaking Oil Cooler If you own a Mercedes Benz with a BlueTEC diesel engine, chances are you may have heard quite a bit about the oil cooler leaksthat have plagued some models.
Once the seals start to leak slowly the rate of leak will increase very fast. You may not initially get oil stains when parked as Mercedes models come with a fairly large undercarriage cover (aka belly pan) that can collect a significant amount of oil before it leaks over. Repair involves replacing the two seals on the oil cooler.
What kind of engine leaks in Mercedes Benz?
M272 – V6 used from 2004-2011, C-Class, E-Class, SLK, CLK, R-Class, Sprinter, GLK M273 – V8 used from 2006-2014, E-Class, SL, S-Class, CLS, G-Wagen, ML, GL, R-Class 272/273 Engines: The most likely rear engine leaks include the oil separator and the cam plugs ( 30mm and 65mm ).
What kind of oil leak does a Bluetec have?
I have a 2010 ML350 blutec with 140k miles currently in the shop for a third oil cooler leak. The first was at 50k. The second at 90k, and now at 140. Incidentally they first replaced the rear Mai which didn’t stop the leak.
Can a diesel engine have an oil cooler leak?
The Achilles heel of this engine, unfortunately, is the oil cooler seal design. We’ll go over which vehicles are affected, the signs and symptoms plus let you know what to expect on a repair. All models that were equipped with the 3.0L V6 diesel engine, engine code OM642, can be affected by this problem.