2002 M137 OIL LEAK
 

Have an 02' s600 with a decent amount of oil comming from what appears to be the valley pan seal in the back of the engine. Is this a common issue or should we be looking at something else for the cause? Saw the posts on the PCV system causing oil leaks and are checking that out. Just wondering what other experiences you folks may have had regarding a similar problem with this engine. Thanks alot for your time.

The oil cooler o-rings are known to leak oil, especially after an over rev when the trans is in limp mode. The oil cooler sits in the valley between the heads and cyl head removal is necessary to replace the o-rings. Not what you wanted to hear, I'm sure.

Ditto, oil cooler is the most likely issue on that engine...

Reach for $5K

Crap! Thats what I suspected, pulled the intake and there is oil all over. Hey Doc, WIS is kind of vague, Ive done M116, M117, M119, heads. Anything trick I should Know?

Hi Shooter,

Did you find the source of your oil leak on the S600? Please tell us what was the problem and ultimate solution?

Thank you!