I converted to 134A about 5 or 6 years ago and still going strong. I had the dealer do it while they were replacing the compressor. I get about 38deg out the vent whild driving and close to 50deg sitting in traffic (100deg outside). I have a Black Magic fan that seems to help a lot since it moves quit a bit of air. I don't think the dealer replaced all the "o" rings either. Knock on wood. I have 134A gauges and have to add 1 or 2 cans per year to keep it going. Small price to pay for cold air since we don't have much of a winter down here..... <img src="/forums/images/graemlins/kewl.gif" alt="" />