Hello Group

There is a great resource on the web for DIY auto A/C info http://www.aircondition.com/ It is a world class mix of Pros and DIYs with a few consumers thrown in. There are four sections, two are particularly relevant Alternative and Questions. Read the archives down the bottom of each board. Every question you ever had about auto A/C is answered there. For the record a R134 system is about 75% as efficient as an R12 system which is about 95% as efficient as an HC system. How well any particular system cools depends on how well it is working and how much safety factor there was in the original design. A converted system can APPEAR to work as well as original as far as the driver feels. When converting systems the big problems are with the lubricants not the refringents, although R134 molecules are much smaller than R12 molecules and will go thru the same size hole much quicker. Unlike home stationary refrigeration systems (they are sealed) all auto A/C systems, even when brand new and working perfectly, are leaky. It is just a matter of degree. Your luck may vary.

Lotsa Luck Eric
85GTI with VR6 Power & Home Brew A/C

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