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Registered
Join Date: Jul 2003
Location: Back in B'ham, AL
Posts: 3,460
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I have used Duracool on my 78-930 A/C with a rotary compressor. So far (a year) no problem at all. It cools as good as R-12.
Do not purge the R-12 system - need to keep the oil in the system.
If your system is just low - cooling to about 60 degrees or so - add a can of Duracool (don't over charge the system, Duracoll has more charge per can). Will need a special fitting that the Duracool rep. will supply with the kit.
Go for it, it works.
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