| Dura Cool-Stop Leak [message #284193] |
Fri, 07 August 2015 08:38  |
gbarrow2
Messages: 765
Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
Karma: 3
|
Senior Member |
|
|
Roy Keen, any other a/c techs,
I re-charged my a/c system with Dura Cool a few weeks ago and it cooled better. Now it is not cooling as well in the 105+ temps. I haven't checked yet but I suspect that the system has leaked down.
I have more Dura Cool but no leak sealant. Can I bleed off the remaining Dura Cool, install a can of R134 stop leak (available locally),and recharge with Dura Cool?
Any other suggestions?
A temporary solution is acceptable. I can re seal or replace the compressor when I have more time, but I need to use the coach for the next few days.
Thanks for the help.
Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
|
|
|
|
| Re: [GMCnet] Dura Cool-Stop Leak [message #284200 is a reply to message #284193] |
Fri, 07 August 2015 09:16  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
|
Senior Member |
|
|
You DO NOT want to intermix the different coolants. You could have a mess with the 134 stop leak as it would have the wrong oil if you had charged your system with Duracool and it had originally had R12 and had not been flushed
JR Wright
GMC Great Laker MHC
GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan
> On Aug 7, 2015, at 9:38 AM, gene barrow wrote:
>
> Roy Keen, any other a/c techs,
>
> I re-charged my a/c system with Dura Cool a few weeks ago and it cooled better. Now it is not cooling as well in the 105+ temps. I haven't checked yet
> but I suspect that the system has leaked down.
>
> I have more Dura Cool but no leak sealant. Can I bleed off the remaining Dura Cool, install a can of R134 stop leak (available locally),and recharge
> with Dura Cool?
> Any other suggestions?
> A temporary solution is acceptable. I can re seal or replace the compressor when I have more time, but I need to use the coach for the next few days.
>
> Thanks for the help.
>
> --
> Gene Barrow
> Lake Almanor, Ca.
> 1976 Palm Beach
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
|
|
|
|
| Re: [GMCnet] Dura Cool-Stop Leak [message #284204 is a reply to message #284200] |
Fri, 07 August 2015 10:08 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
powerjon wrote on Fri, 07 August 2015 08:16You DO NOT want to intermix the different coolants. You could have a mess with the 134 stop leak as it would have the wrong oil if you had charged your system with Duracool and it had originally had R12 and had not been flushed
JR Wright
GMC Great Laker MHC
GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30' Stretch
1975 GMC Avion (Under Reconstruction)
Michigan
> On Aug 7, 2015, at 9:38 AM, gene barrow wrote:
>
> Roy Keen, any other a/c techs,
>
> I re-charged my a/c system with Dura Cool a few weeks ago and it cooled better. Now it is not cooling as well in the 105+ temps. I haven't checked yet
> but I suspect that the system has leaked down.
>
> I have more Dura Cool but no leak sealant. Can I bleed off the remaining Dura Cool, install a can of R134 stop leak (available locally),and recharge
> with Dura Cool?
> Any other suggestions?
> A temporary solution is acceptable. I can re seal or replace the compressor when I have more time, but I need to use the coach for the next few days.
>
> Thanks for the help.
>
> --
> Gene Barrow
> Lake Almanor, Ca.
> 1976 Palm Beach
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
About 15 years ago I converted my system to 134. I did not flush the system and did not replace all of the o rings. At the time, there were tales of doom and gloom if you did that. My system continued to work just fine and one time I installed a can of 134 with stop leak with no problems. It did help with the yearly bleed down that required a can a year to refresh it. Then when I learned about Duracool, I bled down the system and put in Duracool. I have been a happy camper throughout all of those permutations. The compressor is quiet and the system still works just fine.
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
| Re: Dura Cool-Stop Leak [message #284256 is a reply to message #284193] |
Sat, 08 August 2015 00:19 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
|
Senior Member |
|
|
I suspect those stop leaks are for very small leaks however I never had any luck with them. If most all of your dura cool has leaked out and you have access to an electronic leak detector you could add a small amount of 134,12,22 vapor and leak check it to locate the source of the leak unless you are sure it is the compressor seal. I don't know of any easy temporary fix it seams your duracool leaked out in a rather short time. I assume you put a gage on the low side to be sure it has leaked out.
Roy Keen
Minden,NV
76 X Glenbrook
|
|
|
|
| Re: Dura Cool-Stop Leak [message #284278 is a reply to message #284256] |
Sat, 08 August 2015 11:40 |
gbarrow2
Messages: 765
Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
Karma: 3
|
Senior Member |
|
|
On the way to O'Reilly's to buy the stop leak I remembered that my system had never been converted to r1344 and the cautions against mixing the various refrigerant oils. Of course they don't sell stopleak for R12 in a pressurized can- so I bought nothing.
Installed 1 1/2 cans of duracool and all is good. The leak was the r134 adapter. Removed the adapter after filling and it is not leaking now. I hope that is all there was to it.
Bob deK. Your experience is interesting. Is this a/c oil mixology another GMC forum myth?
Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
|
|
|
|
|
|
|
|
| Re: Dura Cool-Stop Leak [message #284283 is a reply to message #284278] |
Sat, 08 August 2015 12:03 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
gbarrow wrote on Sat, 08 August 2015 10:40On the way to O'Reilly's to buy the stop leak I remembered that my system had never been converted to r1344 and the cautions against mixing the various refrigerant oils. Of course they don't sell stopleak for R12 in a pressurized can- so I bought nothing.
Installed 1 1/2 cans of duracool and all is good. The leak was the r134 adapter. Removed the adapter after filling and it is not leaking now. I hope that is all there was to it.
Bob deK. Your experience is interesting. Is this a/c oil mixology another GMC forum myth?
I wouldn't say it is a GMC forum myth but possibly some early concerns when R134 conversions started to appear for the average consumer. I converted all my older cars to R134 with absolutely no issues and have successfully used stop leak over the years with good results. I think that much of the concern over oils and seals has proven not to be a problem for most of us.
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
|
|
|
|
| Re: [GMCnet] Dura Cool-Stop Leak [message #284419 is a reply to message #284416] |
Sun, 09 August 2015 16:00 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
|
Senior Member |
|
|
By intermixing coolants R12 and R134 are a bad mix if you do not drain and flush out the oils ( Mineral oil vs Ester based oils) do not like each. Duracool can be used in a system that has had R134 and be ok. Duracool and others can be used in a system that had R12 with no problems. The propane based coolants such as DuraCool, Freeze 12, Frosty Cool and other are ok to blend and they are similar composition
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
> On Aug 9, 2015, at 4:46 PM, Larry Davick wrote:
>
> I believe Frosty Cool, Duracool, Freeze 12, and so on, are all similar hydrocarbon blends. I used Duracool and it's working very well 4 years on.
> --
> Larry Davick
> A Mystery Machine
> 1976(ish) Palm Beach
> Fremont, Ca
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
