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Old 12-31-13, 09:04 AM   #16
NiHaoMike
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Quote:
Originally Posted by RB855 View Post
R-22 a bit more acceptable 90/370, but not oil compatible. R-290 was considered for some time, given 85/327, but seeing as r-134a was 51/260 which are much more manageable, and available in bulk right out of the bottle. It also works with the existing POE, and mixing a little PAG in wont hurt it as well (using automotive charging equip that has PAG in it, as well as the use of dyed oil for leak finding).
R22 works fine with POE oil. I believe the issue with PAG oil is its low breakdown voltage, so it's best to avoid any of it in a high voltage compressor.
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