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Some oils are specified for R134a and some for R12 and I think some will do for both.. but I do not know how well they will do for both in our NON SUMP Delco R4 compressors.. thus I have not investigated it..
Many auto parts stores.. if you get the $20 over the internet EPA license based on an OPEN BOOK TEST... will sell you R-12... you have to ask them for it...and many of the idiots at the front counter see a request so seldom they do not even know the store has it... but often getting it off Ebay is cheaper..
Last edited by vstech; 06-06-2011 at 06:00 PM.
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