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2015 S550 High Oil use plus oil in breather pipe, cause??
I have a 2015 S550, its has high oil consumption, smells of burning rubber after being driven for a while.
The good news is there are no error codes, no check engine light, all readings in Xentry show engine is running as expected, smooth running on all cylinders, no misfires etc
Bad news is of course there is something amiss for the high oil use and the smell.
I removed the PCV valve but before I removed it I could see oil in the breather pipe (see pic), after removal I could also see sludge in the valve itself. (see other pic of PCV next to good one)
Compression is fine, my next plan is to do a leakdown test to try to help pinpoint the problem.
Just want to ask for any pointer/suggestions as to what could be causing this.
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