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R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

What's this oil leak?

     
Old Jul 14, 2022 | 06:51 PM
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hujirong
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R350 Bluetec
What's this oil leak?
Today I did oil change for my 2013 (Canada) R350 BlueTech and found oil leak in this place. What's leaking? The seal between engine and transmission? I've never taken apart of a Mercedes.

Jirong

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Old Jul 15, 2022 | 12:08 PM
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chassis
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From: unbegrenzt
2017 GLE350 4MATIC
You need to clean away all of the oil and watch for the source.

Common leak point for the OM642 diesel is the oil cooler located in the vee (valley) of the engine block.
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Old Jul 15, 2022 | 12:21 PM
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R350 Bluetec
Originally Posted by chassis
You need to clean away all of the oil and watch for the source.

Common leak point for the OM642 diesel is the oil cooler located in the vee (valley) of the engine block.
Thank you very much for your reply! I've cleaned yesterday and will check it again soon.
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Old Jul 26, 2022 | 05:36 PM
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2010 R350 BlueTec
If it is the oil cooler - do NOT have the service done until you schedule the diesel emissions recall stuff - they will do both at the same time and you'll save a fortune.
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Old Jul 26, 2022 | 05:47 PM
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R350 Bluetec
Originally Posted by phatvw
If it is the oil cooler - do NOT have the service done until you schedule the diesel emissions recall stuff - they will do both at the same time and you'll save a fortune.
Do you mean this: https://www.bluetecsettlement.ca/ ? I've registered and waiting for the Field Measure to be installed. If yes, this is a great news, thank you so much!

At this moment the leak is not so bad so I can wait. This week I notice the turbo to air intake was leaking a bit after I replaced the fuel filter last month. I've replaced the seals yesterday to eliminate the leak from the top.
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Old Jul 26, 2022 | 05:53 PM
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2010 R350 BlueTec
Yep that's the one. They will replace that whole turbo inlet Y-pipe and gaskets too

The oil cooler service won't be free, but will be thousands of dollars less than if you got it done separately.


See my comment here:
https://mbworld.org/forums/r-class-w...ml#post8605399
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Old Jul 26, 2022 | 05:59 PM
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R350 Bluetec
Originally Posted by phatvw
Yep that's the one. They will replace that whole turbo inlet Y-pipe and gaskets too

The oil cooler service won't be free, but will be thousands of dollars less than if you got it done separately.


See my comment here:
https://mbworld.org/forums/r-class-w...ml#post8605399
That's a great news, I will ask them to do the items you recommended, thanks again!
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