CL-Class (W215) 2000-2006: CL 500, CL 600

Does the M137 have an oil seperator?

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Old 02-28-2023, 02:13 PM
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CL 600 '00 5.8L V12
Does the M137 have an oil seperator?

@Fried Chicken and I are digging deep into the M137, mine having some oil in the intake manifold.

His suggestion is, the oil seperator may be clogged or malfunctioning, which sounds plausible.
Now, I'm not aware of any oil seperator on the M137, or is this the task of the oil cooler? It would clarify why PCV hoses are attached to the oil cooler in the first place.

Old 02-28-2023, 06:20 PM
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2005 S500 Designo
You are digging, I am trying to help
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Old 03-02-2023, 03:19 AM
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Yes it does;
Possible theory; the oil cooler could fail at the inside only and flood the oil seperator with oil




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