Do you have to add oil?? - Ford Explorer Ranger Enthusiasts "Serious Explorations"®

daveleeander · 06-30-2006, 12:25 PM

I am in the process of evacuating the AC system on my '02 XLT. I am going to recharge after seeing if the vacuum holds. My question is since I did not replace any components, just evacuated, do I have to add any oil back in?

Dave

*jimcom* · 06-30-2006, 01:20 PM

Most refill bottles have like 2oz oil, 10 oz 134a.
Thats what I need to get soon. :P

daveleeander · 06-30-2006, 03:43 PM

I bought straight 134A. It does not say there is oil in it.

D

prerunner02 · 06-30-2006, 09:45 PM

YES pag oil is needed. The ratio is 4.5 oz of pag oil to 1 lb (or 16oz) of 134A

dutch724 · 07-01-2006, 02:59 AM

Yes, you need Pag46 oil. 7oz is the total capacity for the fs10 compressor.
At least that is what it calls for in a 93' Explorer.

*Brock94* · 07-06-2006, 03:14 PM

I disagree with the posts above. Unless you disassemble your system and flush the various components and empty the oil out of the compressor, you can't be sure how much oil is in there already. Some oil will often leak out when you have a leak in the system, but unless the leak is in the right spot, it is likely that most of your oil charge stayed in the system. (Check the system for signs of an oil spot that may indicate the location of a leak.)

If you don't see any signs of oil leakage on the system components, then it's more than likely that you didn't lose your oil charge and don't have to add any. You could probably get away with adding an ounce or two too much oil if you have the factory charge in there, but you should not add 7 oz unless you've flushed your system as stated above.

Too much oil in the system will, at best reduce performance and at worst, it can destroy your compressor by slugging it with liquid oil (liquid does not compress).

.

dutch724 · 07-06-2006, 05:12 PM

Brock, I agree with you. I was just saying the max the compressor can hold is 7oz. Thx for straighten it out.

ExplorerDMB · 07-06-2006, 05:40 PM

yeah if you just pulling the freon out and then putting it back...no oil is needed

-Drew

**Glacier991** · 07-07-2006, 12:32 AM

Well, let me first reassure David and then add my 2 cents. IF your system was fully discharged, and not by a catastrophic loss.... your oil is safely deep in the system and a plain evacuation will not pull any out.

I have a recovery machine, and when I take a charged system and remove the liquid refrigerant, the machine separates oil from the refrigerant. I usually get between 2 to 4 oz out of a fully charged and recovered system. I measure the oil I got out and add new oil back in before I add the new refrigerant.

Maybe I should think of some photo thread to show what I am describing.

*jimcom* · 07-07-2006, 07:27 AM

A photo thread would be most helpful!

06-30-2006, 12:25 PM	#1
daveleeander Wannabe Elite Explorer Marietta, OH 02 XLT Join Date: Dec 2005 Posts: 120 Vehicle Specs	Do you have to add oil?? I am in the process of evacuating the AC system on my '02 XLT. I am going to recharge after seeing if the vacuum holds. My question is since I did not replace any components, just evacuated, do I have to add any oil back in? Dave

06-30-2006, 01:20 PM	#2
jimcom Elite Stocker Columbia, MD 2000 XLS Join Date: Jul 2004 Posts: 694 Vehicle Specs	Most refill bottles have like 2oz oil, 10 oz 134a. Thats what I need to get soon. :P __________________ --Jim 2000 XLS 4X4 OHV Hotrod Twisted, shackled and ready to roll. 31" Pro-comp AT's, Rancho RSX shocks, BBK Throttle Body, Volant intake Panasonic CQ-C8100 deck, MTX FEX10A sub Infinity Reference 6810cs components and 6812cf speakers Diamond corners and heads, Altezza Tails, Grillcraft grilles

07-01-2006, 02:59 AM	#5
dutch724 Wannabe Elite Explorer Brownsburg, Indiana 1993 Explorer XLT Join Date: Jan 2006 Posts: 29 Vehicle Specs	Yes, you need Pag46 oil. 7oz is the total capacity for the fs10 compressor. At least that is what it calls for in a 93' Explorer. __________________ Dutch

07-06-2006, 03:14 PM	#6
Brock94 Elite Explorer Milford, CT 1994 XLT Join Date: Jul 2004 Posts: 587 Vehicle Specs	I disagree with the posts above. Unless you disassemble your system and flush the various components and empty the oil out of the compressor, you can't be sure how much oil is in there already. Some oil will often leak out when you have a leak in the system, but unless the leak is in the right spot, it is likely that most of your oil charge stayed in the system. (Check the system for signs of an oil spot that may indicate the location of a leak.) If you don't see any signs of oil leakage on the system components, then it's more than likely that you didn't lose your oil charge and don't have to add any. You could probably get away with adding an ounce or two too much oil if you have the factory charge in there, but you should not add 7 oz unless you've flushed your system as stated above. Too much oil in the system will, at best reduce performance and at worst, it can destroy your compressor by slugging it with liquid oil (liquid does not compress). . __________________ Not by might, nor by power but by my Spirit. What are you, O great mountain? -God

07-06-2006, 05:12 PM	#7
dutch724 Wannabe Elite Explorer Brownsburg, Indiana 1993 Explorer XLT Join Date: Jan 2006 Posts: 29 Vehicle Specs	Brock, I agree with you. I was just saying the max the compressor can hold is 7oz. Thx for straighten it out. __________________ Dutch

06-30-2006, 03:43 PM	#3
daveleeander Wannabe Elite Explorer Marietta, OH 02 XLT Join Date: Dec 2005 Posts: 120 Vehicle Specs	I bought straight 134A. It does not say there is oil in it. D

06-30-2006, 09:45 PM	#4
prerunner02 Wannabe Elite Explorer Sacramento, CA '02 XLT 4X4 V8 Join Date: Apr 2006 Posts: 141 Vehicle Specs	YES pag oil is needed. The ratio is 4.5 oz of pag oil to 1 lb (or 16oz) of 134A

07-06-2006, 05:40 PM	#8
ExplorerDMB Moderator/Technician Mechanicsville, Virginia 2004 Acura TL Join Date: Jan 2004 Posts: 6,267 Vehicle Specs	yeah if you just pulling the freon out and then putting it back...no oil is needed -Drew __________________ My Useful Threads (38 Entries and Growing)

07-07-2006, 12:32 AM	#9
Glacier991 EF Tranny Guru Sacramento, CA 95827 1992 XLT Join Date: Feb 2003 Posts: 9,779 Vehicle Specs	Well, let me first reassure David and then add my 2 cents. IF your system was fully discharged, and not by a catastrophic loss.... your oil is safely deep in the system and a plain evacuation will not pull any out. I have a recovery machine, and when I take a charged system and remove the liquid refrigerant, the machine separates oil from the refrigerant. I usually get between 2 to 4 oz out of a fully charged and recovered system. I measure the oil I got out and add new oil back in before I add the new refrigerant. Maybe I should think of some photo thread to show what I am describing.

07-07-2006, 07:27 AM	#10
jimcom Elite Stocker Columbia, MD 2000 XLS Join Date: Jul 2004 Posts: 694 Vehicle Specs	A photo thread would be most helpful! __________________ --Jim 2000 XLS 4X4 OHV Hotrod Twisted, shackled and ready to roll. 31" Pro-comp AT's, Rancho RSX shocks, BBK Throttle Body, Volant intake Panasonic CQ-C8100 deck, MTX FEX10A sub Infinity Reference 6810cs components and 6812cf speakers Diamond corners and heads, Altezza Tails, Grillcraft grilles