Question about 1991 Ford Aerostar Extended

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91 Aerostar AC oil capacity

Replaced compressor and I am recharging R-12. Need to know how much mineral oil to add to each component. Vehicle has rear AC. System was flushed clean but I do not want to replace hoses/134 convert.
I installed new auto orifice tubes in both evaporators. Replaced accumulator and condenser.

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  • Anonymous Mar 29, 2014

    Oil capacity for accumulator/drier

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R-12 isn't designed to work in an vehicle so I have no idea what to tell you there. R-22 was used in vehicles but is not available to the general public without a license which cost more than the R-134 conversion kit.

Posted on Jul 12, 2010

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You have a big problem---no R12 has been avail for the
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SO-- you need to flush every component of mineral oil
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