This compressor lived a very short life. Suspect list is:
1: Flush solvent residue - the solvent that I used may have left an oily residue.
2: Bad compressor. Right before I stalled this compressor, I removed the drain bolt and emptied it, to ensure a proper fill. What came out was very... funky. I suspected that it was a preventative leak-seal but may have been metal.
Since this was a lost cause, I decided to upgrade to a 7 cylinder SD7H15-style compressor. This also means a new condenser, dryer, and complete line flush.