Automotive Air Conditioning Information Forum (Archives)

WyrTwister on Tue April 15, 2014 3:08 PM

Country of Origin: United States

Is PAG oil compatible with POE oil ? Or vice versa ?

God bless
Wyr

HECAT on Tue April 15, 2014 8:07 PM

They will mix and they will move with R134a. But I do not know of any specific compressor lubrication requirement such a mix would meet.



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WyrTwister on Sun April 20, 2014 4:38 AM

I was reading of an A/C flush fluid that was said to be primarily POE oil ?

Made me wonder , if you were working on a PAG system & if you did not get all the POE out of the system ?

Thanks ,
Wyr
God bless

HECAT on Sun April 20, 2014 9:40 AM

POE oil flushes are promoted on the premise that remaining residual will be (or is) compatible with the systems oil. Since it is not a solvent type which can be force evaporated; how much is left behind? My testing indicates measurable amounts; often much more than an ounce depending on the component design. So now you need to know how much is left behind, so it can be subtracted from the full oil load amount. Clean and dry is a much easier starting point to calculate from.

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