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#11
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A can of R-134a contains both refrigerant and lubricating oil, and I have read that the practice of charging without purging can, over time, result in significant accumulations of excess oil, giving rise to unusually high operating pressure and leading to premature seal failure. $920 later I just found this out. I had a small leak that only happened when the unit wasnt used for a week or more. I added oil and a recharge can of 134a and my compressor locked up a month later. Was real cold for a month though! Mechanic told me the same thing, too much oil and shouldnt be done by shadetree mechanics wiythout meters. Ow! That lesson was a dear one! I do know that overcharging any A/C sysem |
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