I just wasted $115 at the auto shop just to find out my AC compressor is leaking. The mech said he could do a temp fix that "MIGHT" get me through the summer for $200 plus $70 per pound of freon. He really, really wanted me to go with the conversion to the new stuff (R-131 ?) to a tune of $900 plus. My questions to you guys: what's needed to do the conversion? Can I do it myself or does a qualified tech gotta do it? What is the best I can hope for in the cost department? I have seen convertion kits at the part stores but I'm not spending that wad of $$ without a little education first.