All good suggestions.

And at risk of sounding like a broken record, clean out the dipstick return channel that drains the CCV. As in, remove the dipstick guide tube, and thouroughly clean the crap out of the small channel in the MAIN TUBE that returns oil to the sump. It's not enough to clean the small elbow; in my experience, that just pushes crud further down. Or consider fitting the cold weather dipstick.

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12 E70 3.5i xDrive
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