Do I need to add oil to my A/C system? - Ford Truck Enthusiasts Forums



1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Do I need to add oil to my A/C system?

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-13-2016, 08:19 PM
velcro7279 velcro7279 is offline
Senior User
Thread Starter
 
Join Date: Oct 2003
Location: Grayling, MI
Posts: 439
velcro7279 is starting off with a positive reputation.
Do I need to add oil to my A/C system?

I have a 1994 F 350 that the A/C isn't cooling as well as it should. I know this is r134. I have a manifold set for the A/C that I have used before on other vehicles, so I know how to add the refrigerant. I need to know if I need oil for it before I hook up the gauges to add refrigerant. I saw a TSB about insufficient oil in these systems. That is why I am asking about this.
Reply With Quote
  #2  
Old 07-13-2016, 08:30 PM
Lead Head Lead Head is offline
Post Fiend
 
Join Date: Jul 2007
Location: Rhode Island
Posts: 7,694
Lead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to all
Any leak in the AC system can take compressor oil with it, so it's always a good idea to replenish the compressor oil if you're charging it.
Reply With Quote
  #3  
Old 07-13-2016, 08:45 PM
velcro7279 velcro7279 is offline
Senior User
Thread Starter
 
Join Date: Oct 2003
Location: Grayling, MI
Posts: 439
velcro7279 is starting off with a positive reputation.
Quote:
Originally Posted by Lead Head View Post
Any leak in the AC system can take compressor oil with it, so it's always a good idea to replenish the compressor oil if you're charging it.
Any idea how much I should add? I have seen where these can take 9 oz if they are empty, but not sure what to add at this point.
Reply With Quote
  #4  
Old 07-13-2016, 10:15 PM
Lead Head Lead Head is offline
Post Fiend
 
Join Date: Jul 2007
Location: Rhode Island
Posts: 7,694
Lead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to allLead Head is a name known to all
Unfortunately I have no idea how much you should add, and it can he hard to judge depending on the type of leak.
Reply With Quote
  #5  
Old 07-20-2016, 09:11 AM
ASTROENG2011 ASTROENG2011 is offline
New User
 
Join Date: Jun 2012
Posts: 12
ASTROENG2011 is starting off with a positive reputation.
You should be ok adding one of the pressurized cans available at the auto shops. It only holds 2 oz of oil. Make sure to add the correct type of oil. PAG used in almost all of the r-134a systems is very finicky about mixing with other types( POE maybe, but definitely not mineral). PAG comes in different viscosities. PAG100 and PAG46 are two that are avaialable. Check your owners manual for correct identification. Use proper care and precaution when adding the oil so as to not add any trapped air in the hoses.
Reply With Quote
  #6  
Old 07-20-2016, 09:58 AM
GuitarJesus's Avatar
GuitarJesus GuitarJesus is offline
Posting Guru
 
Join Date: Apr 2012
Location: Menifee, CA
Posts: 1,689
GuitarJesus is gaining momentum as a positive member of FTE.
1994 calls for 7oz of PAG 46 oil.
Reply With Quote
  #7  
Old 07-21-2016, 07:44 PM
velcro7279 velcro7279 is offline
Senior User
Thread Starter
 
Join Date: Oct 2003
Location: Grayling, MI
Posts: 439
velcro7279 is starting off with a positive reputation.
Thanks for the info guys. Ill get some PAG 46 for it and add a little when I put in the refrigerant.
Reply With Quote
  #8  
Old 07-21-2016, 07:56 PM
DBGrif91's Avatar
DBGrif91 DBGrif91 is offline
Posting Guru
 
Join Date: Jul 2009
Location: Des Moines
Posts: 1,825
DBGrif91 is gaining momentum as a positive member of FTE.DBGrif91 is gaining momentum as a positive member of FTE.
POE oil is fully compatible with all other types of oil in R134a systems, and it's much, MUCH cheaper.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
refrigerant oil poysippiauto 2007 - 2014 Expedition & Navigator 1 08-04-2017 03:23 PM
A/C compressr kit, refrigerant oil capcity5.8L Windsor oooowoooo 1978 - 1996 Big Bronco 0 09-29-2016 09:05 PM
AC refrigerant question HowieE Excursion - King of SUVs 0 07-17-2016 05:14 PM
A/C Refrigerant: Capacity Confusion reddawgg 1999 to 2016 Super Duty 2 06-30-2016 07:17 PM
Refrigerant and Pag Oil capacity 1994F2507.3L 1994.5 - 1997 7.3L Power Stroke Diesel 10 05-13-2016 03:56 AM


Go Back   Ford Truck Enthusiasts Forums >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 05:54 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.