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Old 05-17-2010, 10:14 PM   #4
mirage83
12psi boost
 
Join Date: Feb 2007
Location: Georgia
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If it had 12 before you don't want to just throw 134a in it. The two aren't compatible, oils or refrigerant. He'll want to replace the dryer, expansion valve, and a few of the seals (at a minimum) if he wants to convert it over.
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