I just had a pound added to my car for about $90, which included shop labor at the dealership. I knew that the system only needed a recharge, but I wanted them to test and diagnose it while they had it. So one hour labor and one pound of R-12. They cautioned me about a potential system leak, but I've been noticing the system performance degrade over the last year, and the shop manual states that losing an ounce or two per year is normal. Pretty standard for them to add a UV dye these days to identify leakage too.

However, when is the last time that your system was operable? If you don't have any system pressure in it at all, you are looking at as a minimun replacing the reciever / dryer, vacuum drying the system, and (I think) two and a half pounds of R-12.

Good Luck

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