92 Camaro A/C with R12
I have a 92 Camaro with R12 A/C system. When I got the car it had set for a while. The A/C works but not real effiecent. The compressor seems to cycle on and off way to often. I have not hooked up my gauges to it yet but my guess is it is a little low on R12 from the long sit. My question is I have seen a product called Freeze 12 an R12 substitute. Can this be used in my system and without doing a complete evacutation and recharge(mixing the two)?