OK, I'm into the A/C to replace my leaking Evaporator, and the related parts with the job[drier, etc] Here's my question, has anyone done a R-134 conversion to a high mileage Gen 2 Montero from the stock R-12 freon? Did you run with this conversion long enough[like several seasons]to see how it performs when compared to the cooling of the R-12? Any downside like shortened compressor life due to the high pressures that R-134 normally has on the high side of the A/C system? Thanks for any info you can shed. <img src="/forums/images/graemlins/cheers.gif" alt="" />