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Old 09-01-2024, 10:27 PM
SS-TA SS-TA is offline
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Join Date: Oct 2006
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The Pro6Ten can be run with R12 or R134a. You have to change the compressor oil. The Pro6Ten comes with PAG oil which is only for R134a. The R-12 GM systems originally came with mineral oil (GM Part). You can switch to Polyester oil which is compatible with both R-12 and R-134a. Drain the compressor, fill with polyester oil, spin the shaft than drain again. Repeat one or two more times to get out all the PAG oil.

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