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1989 lxi ac retrofit


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Nope, I've never done it.


I have read that R134a does not have the same compressibility as R12 and as such will not deliver the same cooling when run through a compressor designed for R12. I also read that replacing the mineral oil with polyalkene glycol (PAG) is important since R134a is either insoluable or only partially soluable in mineral oil; the lubricant must mix with the refrigerant, otherwise it will pool in a low spot within the system, which is what any residual mineral oil will do in the presence of PAG and R134a.


Have fun!

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