Wow. That's very detailed explanation. No wonder my last car the old partner checked then recommend me to change entirely new one. That car have few front collisions. Air con became not cold after a while suspect leaking even car was like 5 yo. So changed entire new set. Lasted till I sold it when it was 9 yo.

Got visual how the stop leak looked like? How long has it been? At least save u major repair of changing compressor.