Alrighty system flushed, gonna let it vac for 45mins or so just to be on the safe side.

Replacing the expansion valve was a little fiddly...but got it eventually.
Those black O-rings there just crumbled in my hand when removed. Probably being proactive killing any o-ring leak locations right now

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k