Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

PAG Oil water absorption

Old Codger on Thu September 11, 2008 12:48 PM User is offline

Year: 1995
Make: Toyota
Model: Camry
Engine Size: 4 Cyl
Refrigerant Type: 134a
Ambient Temp: 90
Country of Origin: United States

OK, I was wondering how quickly PAG oil absorbs water vapor. The new replacement compressor that I bought comes filled with 8oz of PAG oil. One source has suggested that I drain it all out to verify that I have that amount of oil and then refill it. (Actually he suggested to put 6 oz back into the compressor and 1 oz to the evaporator and 1oz to the condenser. I have completely flushed everything and will install a new receiver/drier. The Camry manual says that the system takes a hair less than 8 oz.) All this sounds reasonable to me but I expect that the oil will be out of the compressor for a couple of hours and in the vented system for a while longer before I can get everything hooked up and can apply a vacuum to it.

How long can I allow PAG oil to stay "in the open" before it absorbs too much water?

When I put a vacuum on the closed system will it pull entrained water out of the oil itself?

Are there any "tricks of the trade" that I can use to minimize the oil's exposure to air and even the system's exposure to air?

Is exposure to air (I'm in Houston and there is about 80% humidity on the average) that big of a deal if I am going to vacuum out the system for several hours?

Thanks,
OC

TRB on Thu September 11, 2008 2:05 PM User is offlineView users profile

Depends on the moisture in the atmosphere. I would not leave a vehicle open for a day or two with any oil type. Best to do as much as possible add oil and button the system up ASAP. We can have a system open for a good part of the day if we just changing a component.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.