I've been using Enviro-Safe and its predecessor HC-12A for almost 10 years in 8 different cars. It is almost the same as Freeze 12 I think. It is a lighter gas and doesn't create near as much pressure and heat within the compressor. I get it for $4 a can. I see a distributor is running a full page ad in the latest "Old Car Trader". It is a direct replacement for R12 or R-134a, and FAR less toxic than the 134a. Make sure you read the directions carefully on these type refrigerants as the load a little differently and don't require the same pressure on the guage.
Mine have always made my systems blow really cold.
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A life spent making mistakes is not only more honorable but more useful than a life spent doing nothing (G.B.Shaw). At least that's my excuse.
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