C63 AMG (W204) 2008 - 2015
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Wet under the oil cap.

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Old 12-27-2017, 02:34 AM
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Question Wet under the oil cap.

Hello guys. I have oil under the oil cap on the engine. I replaced this cap but after some time again it happened again.
Who know what the problem is?





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Old 12-27-2017, 02:36 AM
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c63 amg PP (w204)
I have absolutely the same problem. I was thinking of replacing the oil cap as well.
Old 12-27-2017, 08:03 AM
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Is it possible that your PCV is failing and building up too much crankcase pressure?
Old 12-27-2017, 09:31 AM
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Originally Posted by Mort
Is it possible that your PCV is failing and building up too much crankcase pressure?
I replaced the PCV valve not long ago.
Old 12-27-2017, 12:53 PM
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The rubber gasket under the cap sees a lot of abuse and will eventually start to leak.

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