I understand. The RD is not an expensive item looks like ~$25 new so I will put that on my list.

I have a vac pump...So all that is needed is to let it run overnight and then turn the compressor by hand and that should be sufficient in regards to "flushing" the system?

Do you know which of the 6 vacuum pods are the ones that are accessible from the glovebox? I am thinking of trying to cut down the costs a little on the items that can be replaced in the future without much work.

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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