OM642 Mystery Oil Leak
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MBWorld Fanatic!
Joined: Apr 2003
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From: Northeast
2012 S350 Bluetec, 2014 GLK250 Bluetec, 2026 E350 4Matic
OM642 Mystery Oil Leak
Any of you OM642 experts out there have any idea what might cause this? I go through it in this video.
Thread Starter
MBWorld Fanatic!
Joined: Apr 2003
Posts: 1,036
Likes: 277
From: Northeast
2012 S350 Bluetec, 2014 GLK250 Bluetec, 2026 E350 4Matic
Someone posted a comment on my video telling me that it's likely the oil filter housing where it bolts to the block. I did not realize the bottom part extended so far over and bolted to the front of the block.
Thread Starter
MBWorld Fanatic!
Joined: Apr 2003
Posts: 1,036
Likes: 277
From: Northeast
2012 S350 Bluetec, 2014 GLK250 Bluetec, 2026 E350 4Matic
Update for those interested: Dealer put a borescope up into the V of the engine and discovered oil cooler leak. It had the purple seals installed 70K ago, I guess that's about the lifespan. The original orange ones failed while the car was still under warranty.
This leak can mimic the oil filter housing leak.
This leak can mimic the oil filter housing leak.
