Why not just convert over to 134a? $40 US for the conversion kit at the local parts store. Just did it on a '79 Camaro TUesday.....Works beautifully.

All my vehicles already have the 134a. However, for those who don't.... I also discussed it a few years back with an A/C tech about what it would take to really do it right. The list of things, and associated costs for a long term fix would make it a bit costly for some.

My dad and i are looking at alternatives to conversion, because when we converted one of our tractors, the compressor failed shortly thereafter because of the differences in pressure or lubrication. I realize that a tractor is not a car, but this is why i'm looking at alternatives. I gave up on the 50/50 mix because it would only have been good for one shot, and i may need more to recharge so I bought a case of Freeze 12 today, and i'll let you know how it goes.

Compressor failure was one of the possible side affects that the service tech mentioned...said it was a toss up on if it would fail or not. A regular service shop used some of the HC-12a in a friend'* A/C about 2 - 3 years ago, and it'* still working ok. I was curious if anyone else had tried it It will be interesting to hear if the freeze12 works as well.