Automotive Air Conditioning Information Forum
Provided by www.ACkits.com

Auction links are prohibited on this forum.
Google
WWW Auto A/C Information Forum
Please read the Forum Disclaimer page, which by visiting this site you agree to its terms.



Navigation:


FORUMS > Automotive Air Conditioning Forum < REFRESH >
Topic Title: oil differences
Created On Mon July 03, 2006 12:31 AM
Topic View:

View thread in raw text format


eddiejr
Senior Member

Posts: 145
Joined: Jun 2006

Mon July 03, 2006 12:31 AM
User is offline

Just wondering what the difference between PAG oil and Ester oil is?? Why are the two used with 134a? Is one better? Is there negative affects to one over the other, espeially if something were to happen? PROS / CONS??

Also, is mineral oil still available? Where could you get that? (i know it is for R12 as opposed to 134a)

thanks.

 
Reply
   
Quote
   
Top
   
Bottom
     



k5guy
Senior Member

Posts: 1388
Joined: Aug 2003

Mon July 03, 2006 2:20 AM
User is offline

We usually use the ester for retrofits. Most of the major auto makers use PAG in systems that are orginal R134a. There are some minor differences, but the main thing is to use the right one for your application. PAG is more likely to be less tolerant of moisture in your system. Mineral oil is still available. Check with ACKITS, I know they have it. But if you put ester in the R12 system, then later you can switch to R134a without a flush.

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


Send me e-mail

 
Reply
   
Quote
   
Top
   
Bottom
     



eddiejr
Senior Member

Posts: 145
Joined: Jun 2006

Mon July 03, 2006 10:44 AM
User is offline

I have heard that 134a sytems get acidic when air and moisture get in the system. Is this because of the 134a or because of the oil? Are R12 systems the same with mineral oil?

 
Reply
   
Quote
   
Top
   
Bottom
     



k5guy
Senior Member

Posts: 1388
Joined: Aug 2003

Mon July 03, 2006 1:28 PM
User is offline

I don't think its the oil. http://www.robinair.com/acsolutions/acvacuum/acvacuum.htm

"Moisture in the form of water can cause corrosion after a period of time. However, moisture mixed with refrigerant creates much more corrosion trouble. Refrigerant such as R-12, containing chlorine, will slowly hydrolyze with water and form hydrochloric acids. This acid greatly increases the corrosion of metals and could corrode copper plating."

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


Send me e-mail

 
Reply
   
Quote
   
Top
   
Bottom
     



eddiejr
Senior Member

Posts: 145
Joined: Jun 2006

Tue July 04, 2006 10:22 AM
User is offline

i was just looking on ackits.com and there was a PAG-125 I think that says it is GM approved for an aftermarket lubricant for Harrison compressors. I have a Harrison R4 on my car (1985). Will it be fine too use ester oil because that is what is available locally at the auto store I was at. Could it reduce the life of the compressor?

thanks.

 
Reply
   
Quote
   
Top
   
Bottom
     



eddiejr
Senior Member

Posts: 145
Joined: Jun 2006

Tue July 04, 2006 10:22 AM
User is offline

sorry, double post by accident....don't know how to delete.

Edited: Tue July 04, 2006 at 10:23 AM by eddiejr

 
Reply
   
Quote
   
Top
   
Bottom
     



Chick
Senior Moderator

Posts: 13652
Joined: Oct 2001

Tue July 04, 2006 10:48 AM
User is offline View users profile

Quote

Originally posted by: eddiejr
i was just looking on ackits.com and there was a PAG-125 I think that says it is GM approved for an aftermarket lubricant for Harrison compressors. I have a Harrison R4 on my car (1985). Will it be fine too use ester oil because that is what is available locally at the auto store I was at. Could it reduce the life of the compressor?



thanks.


On R4's and A6's use only PAG 150 is using PAG, but you can use ester 100 if you wish

-------------------------
Chick
Email: Chick

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

Freedoms just another word for nothing left to lose
 
Reply
   
Quote
   
Top
   
Bottom
     



eddiejr
Senior Member

Posts: 145
Joined: Jun 2006

Tue July 04, 2006 11:55 AM
User is offline

ok cool, thanks.

 
Reply
   
Quote
   
Top
   
Bottom
     

View thread in raw text format
FORUMS > Automotive Air Conditioning Forum < REFRESH >

Navigation:
Copyright © 2003 Arizona Mobile Air Inc.
All rights reserved. 9/27/04
Comments to Web Development Team
         info@ackits.com