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I'll pop into this thread to say that I've had a very similar problem on a 2011 w/ 261k miles, although with 2x the volume of oil. Prev owner...
Bottom of valve cover. Brown gummy oil is sticking to everything.
An overhead look at the cams and the pool of sludge in here. (yes I noticed the oil falling into the spark plug holes from this pic and cleaned it...
The coolant looks much lighter in this side port of the intake manifold.
Another look at the strangely light brown oil in the intake manifold side port.
A closeup look at this oil.
Some of the "oil skins" that appeared after I displaced oil that was already settled.
A look at the focaccia dough.
