From my understanding old R22/12 equipment used Mineral, which seems to mean non synthetic base 3 or less or Alkylbenzene base.
New R410a equipment seems to be POE in hvac and PAG in 134a/automotive, with R1234 using POE sometimes....
Apparently they don't mix well with non chlorine based refrigerants. But all work with propane (R290)
POE seems to be the defacto minimum standard (Polyol Ester?) Which to me seems like any synthetic oil would be up to snuff, Ester oils are just synthetic, right? additives aside?
My backyard refrigeration experiments with 410a/22 equipment running propane as retrofit (R290) lead me to want to just try using 100% synthetic motor oil in equivalent viscosity in place of POE.
What could possibly go wrong? Additives/etc wise.
Seems like emptying out the potentially moisture contaminated POE compressor oil and replacing with (Dry) synth motor oil would be better than trying to vac and re-use the old POE (clean looking) oil.
Thoughts/Opinions/Concerns? Other than the usual "UR DUMB DONT USE PROPANE" comments, speaking strictly lubricatively here.
Also, what exactly makes POE refrigerant oils so **** expensive compared to synthetic motor oil?
New R410a equipment seems to be POE in hvac and PAG in 134a/automotive, with R1234 using POE sometimes....
Apparently they don't mix well with non chlorine based refrigerants. But all work with propane (R290)
POE seems to be the defacto minimum standard (Polyol Ester?) Which to me seems like any synthetic oil would be up to snuff, Ester oils are just synthetic, right? additives aside?
My backyard refrigeration experiments with 410a/22 equipment running propane as retrofit (R290) lead me to want to just try using 100% synthetic motor oil in equivalent viscosity in place of POE.
What could possibly go wrong? Additives/etc wise.
Seems like emptying out the potentially moisture contaminated POE compressor oil and replacing with (Dry) synth motor oil would be better than trying to vac and re-use the old POE (clean looking) oil.
Thoughts/Opinions/Concerns? Other than the usual "UR DUMB DONT USE PROPANE" comments, speaking strictly lubricatively here.
Also, what exactly makes POE refrigerant oils so **** expensive compared to synthetic motor oil?