I've got R-12 in my '85. It works pretty good, and the car doesn't seem to run very hot when the AC is on.
I've got R-134a in my '86. It works pretty good when I'm driving the car down the road, but gosh almighty, is it pitiful at idle at the traffic light.
I'm in TX, and the '86 is a black car. ugh.
Anything to improve the performance of the 134a car?
Also, has anybody got experience with the Freeze 12 for R-12 systems?