Update: She just finished her third cycle. I'm gonna give it about three more before I call it and say all the oil is back in the compressor. So far the longest she has ran is 2 minutes. Max temps so far is -45c and I think that is about it until I get some lower ambients. -45c is reached right at 1m 30s and holds steady from there.
I can't wait to get the time to insulate the board and get to benching.