| non GMC Duracool [message #158909] |
Wed, 01 February 2012 19:33  |
Wayne
Messages: 106
Registered: August 2004
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I have a 1994 Suburban with 134 frion. It needs a compressor. A friend gave me a known GOOD comp that has r12 oil in it. I have drained the oil and let it drain for a few hours. I will be adding 134 OIL to the comp and duracool.
Do you think what little r12 oil that is still clinging to the inside of the comp will cause a problem? Should I flush the comp before I install it or use as is? If you think it should be flushed what chemical should I use?
Thanks
Wayne Lawrence
76 Birchaven
Bellflower CA
w.lawrence@verizon.net
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| Re: [GMCnet] non GMC Duracool [message #158915 is a reply to message #158909] |
Wed, 01 February 2012 20:01  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Here's some flushing info:
http://www.e38.org/pparish/flushing.htm
Ken H.
On Wed, Feb 1, 2012 at 8:33 PM, Wayne Lawrence wrote:
>
>
> I have a 1994 Suburban with 134 frion. It needs a compressor. A friend
> gave me a known GOOD comp that has r12 oil in it. I have drained the oil
> and let it drain for a few hours. I will be adding 134 OIL to the comp and
> duracool.
>
> Do you think what little r12 oil that is still clinging to the inside of
> the comp will cause a problem? Should I flush the comp before I install it
> or use as is? If you think it should be flushed what chemical should I use?
> Thanks
> --
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] non GMC Duracool [message #158917 is a reply to message #158914] |
Wed, 01 February 2012 20:47 |
Wayne
Messages: 106
Registered: August 2004
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Hi emery,
I need to know what chemical (cheapest and easy to get)That I can use while the comp is on the work bench.
Wayne Lawrence
76 Birchaven
Bellflower CA
w.lawrence@verizon.net
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| Re: non GMC Duracool [message #158923 is a reply to message #158909] |
Wed, 01 February 2012 22:36 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
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Isn't it the other way around. Leave the R12 compressor as is, flush the 134a system, replace the dryer and go with R12 oil and Duracool? Or is Duracool fine with either type of oil?
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: non GMC Duracool [message #158930 is a reply to message #158923] |
Wed, 01 February 2012 23:13 |
Wayne
Messages: 106
Registered: August 2004
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Hi John,
Duracool works with either one. Trouble comes when you mix the different oils.
Wayne Lawrence
76 Birchaven
Bellflower CA
w.lawrence@verizon.net
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| Re: non GMC Duracool [message #158987 is a reply to message #158909] |
Thu, 02 February 2012 14:59 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
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Right, I knew about the non compatibiltiy of mineral and ester oils. I didn't know anyone would go to Duracool in a 134a system when 134a is so available over the counter, though the prices have gone up quite a bit. I immagine the efficiency goes way up over 134a if it goes up some over R12.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: non GMC Duracool [message #158989 is a reply to message #158987] |
Thu, 02 February 2012 15:14 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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| JohnL455 wrote on Thu, 02 February 2012 14:59 |
Right, I knew about the non compatibility of mineral and ester oils. I didn't know anyone would go to Duracool in a 134a system when 134a is so available over the counter, though the prices have gone up quite a bit. I imagine the efficiency goes way up over 134a if it goes up some over R12.
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You have it correct. Cost, efficiency, and leakage.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: non GMC Duracool [message #159331 is a reply to message #158989] |
Sat, 04 February 2012 19:44 |
Bob Raef
Messages: 165
Registered: July 2009
Location: Lubbock, TX
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In my 1976 23 ft GMC A/C system I have a leak I have not been able to find. It was filled with Duracool and all leaked out. Can I use a can of 134a leak detector? What say you all?
Bob Raef, KF5TYA
(575) 973-2273
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| Re: [GMCnet] non GMC Duracool [message #159346 is a reply to message #159345] |
Sat, 04 February 2012 20:44 |
emerystora
Messages: 4442
Registered: January 2004
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Forgot to say that when you find the leak and fix it you will have to use a vacuum pump to get the air and/or water vapor out of the system.
Emery Stora
On Feb 4, 2012, at 7:41 PM, Emery Stora wrote:
> No, don't put that in it. They usually have oil included which might react with the oil already in the system. I would suggest that since its all leaked out you pressurize the system with either air or by using a bottle of nirtrogen.
>
> Then you can just check for leaks with soapy water or with propane leak detector which may be better for small leaks.
>
>
> On Feb 4, 2012, at 6:44 PM, Bob Raef wrote:
>
>>
>>
>> In my 1976 23 ft GMC A/C system I have a leak I have not been able to find. It was filled with Duracool and all leaked out. Can I use a can of 134a leak detector? What say you all?
>> --
>> Bob Raef
>> Ruidoso, NM
>> 1976 XBirchaven Rear Bath (in rehab)
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>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>
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Emery Stora
77 Kingsley
Santa Fe, NM
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| Re: [GMCnet] non GMC Duracool [message #159352 is a reply to message #159331] |
Sat, 04 February 2012 20:59 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Go to the Duracool and check out their lubricant with UV dye included.
They've also got some leak detectors -- sound like snake oil to me. But
then, that's what a lot of folks say about Duracool.
Ken H.
On Sat, Feb 4, 2012 at 8:44 PM, Bob Raef wrote:
>
>
> In my 1976 23 ft GMC A/C system I have a leak I have not been able to
> find. It was filled with Duracool and all leaked out. Can I use a can of
> 134a leak detector? What say you all?
> --
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] non GMC Duracool [message #159393 is a reply to message #159383] |
Sun, 05 February 2012 09:57 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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I said " They've also got some leak detectors"; I meant to say "...
sealers". They still sound like snake oil. :-(
Ken H.
Ken Henderson wrote on Sat, 04 February 2012 21:59
> > Go to the Duracool and check out their lubricant with UV dye included.
> > They've also got some leak detectors -- sound like snake oil to me.
> But then, that's what a lot of folks say about Duracool.
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] non GMC Duracool [message #159440 is a reply to message #159402] |
Sun, 05 February 2012 17:44 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
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G'day,
Glad I waited a bit and let you guys finish your "conversation" I was going to buy some of the leak sealer! Guess I'll just buy the
leak detector and a UV flashlight to try and find the leak in Double Trouble's dash air.
Regards,
Rob M.
-----Original Message-----
From: Matt Colie
Ken Henderson wrote on Sun, 05 February 2012 10:57
I said "They've also got some leak detectors"; I meant to say "sealers". They still sound like snake oil. :(
Ken H.
Ken,
As is more typical, I completely agree with you on that point. I have seen situations were the leak sealers were tried. I have
never heard of it actually working long term. I have witnessed the mess that was made that could have been avoided by doing the
job correctly the first time.
Matt
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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