Home » Public Forums » GMCnet » [GMCnet] Dura Kool, and Freeze 12
| [GMCnet] Dura Kool, and Freeze 12 [message #365188] |
Fri, 02 July 2021 10:56  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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There are also some other brands. This comes up now, and then. So, it might be of interest to many. What are the latest list of brands, and where to get them at? As to price. Go by the oz per can. Not just the can price. You can be scammed with the can price.
Bob Dunahugh
78 Royale since 2003
4 Real COPO Yenkos
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| Re: [GMCnet] Dura Kool, and Freeze 12 [message #365189 is a reply to message #365188] |
Fri, 02 July 2021 11:34  |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
Karma: 4
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pick up a side can-tapper, a set of manifold gauges and just use regular ol propane. Thats what most of that stuff is anyway.
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| Re: [GMCnet] Dura Kool, and Freeze 12 [message #365190 is a reply to message #365188] |
Fri, 02 July 2021 11:46 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Bob-
information will be outdated after I would type it in.
bought a case of frostycool off amazon or ebay last time... prior to that, I had ordered and actual "duracool" was shipped to me from canada years ago.
r-12a is fairly inexpensive, for what it is, I really don't pay any attention to the cost of the can. maybe a buck or 2 variance over the past few years from when I look from different suppliers. shipping cost can be a big game changer too when ordering things via the web.
last comment- is that I am running frostycool lately, and what I installed in my new A/C system that just so happened to be changed a few times so went through a case over the past year. I still have enough left to recharge maybe 2-5 coaches???? but I have a friend I trust in the gmc world who is also a HVAC(home) repairman. He swears that his experience in charging a couple GMC motorhomes is the frostycool does not work as well as the true "Duracool" brand r-12a. I am going to get ahold of some cans here and swap to "true duracool" soon. Can't hurt. My A/C seems to start out strong, but eventually it almost seems like it is not blowing as cold as when I first fired it up. I don't think it is freezing up(no signs of ice or frost when I look into the evaporator). so hard to deal with when traveling, it is super hot some days, and not so hot other times. trying to see how something performs while on the freeway at 95 degrees compared to when you get home in the shade that evening and it drops to 80 outside.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] Dura Kool, and Freeze 12 [message #365193 is a reply to message #365189] |
Fri, 02 July 2021 12:27 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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boybach wrote on Fri, 02 July 2021 12:34pick up a side can-tapper, a set of manifold gauges and just use regular ol propane. Thats what most of that stuff is anyway.
Larry
Larry,
I am not picking on you, you just happened to step into my area where I have a lot of experience, some at other people's expense.
Regular "ol" propane is not all that good as a refrigerant. Believe me when I tell you it was tried on the way to inventing dichlorodifloromethane (R-12 as we all know and used to love). Also, "Grilling Grade" propane has an odorant add that is not of any value. If you have a system that is a chronic leaker, regular ol propane may be a good choice as a diagnostic tool because it is cheap and you can find the leaks with a gas leak detector. I have done this a few times and usually to great success.
Admittedly is was a few years back, but I have had a history of can side tappers.
For starters, leaks were common because the sides of the cans are not robust enough the maintain the seal when the pressure gets low and you will have a problem if you try to use the system to suck on the can in the early part of the charging exercise.
I have never successfully stored a can-side opened can, but I have a half a can (by weight) of HC-12 on my shelf that I found yesterday when I went looking for my tapper. It has been there since last fall.
Another can tapper (when I need one) will be less than 10$ and the one on the can of Dura-Kool is as old a R-134 (over 20years).
Dura-Kool is not just propane. That propane is very pure so it does not cause problems. The Iso-Butane that is the other part is also not normal butane (as in lighter fuel), it is an isomer of that butane. This means it has the same chemical make-up, but it is assembled differently. I assure you that if this was not worth doing to make it a good shot at R-12, they would never do it.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Dura Kool, and Freeze 12 [message #365194 is a reply to message #365189] |
Fri, 02 July 2021 12:28 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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boybach wrote on Fri, 02 July 2021 12:34pick up a side can-tapper, a set of manifold gauges and just use regular ol propane. Thats what most of that stuff is anyway.
Larry
Larry,
I am not picking on you, you just happened to step into my area where I have a lot of experience, some at other people's expense.
Regular "ol" propane is not all that good as a refrigerant. Also, "Grilling Grade" propane has an odorant add that is not of any value. If you have a system that is a chronic leaker, regular ol propane may be a good choice as a diagnostic tool because it is cheap and you can find the leaks with a gas leak detector. I have done this a few times and usually to great success.
Admittedly is was a few years back, but I have had a history of can side tappers.
For starters, leaks were common because the sides of the cans are not robust enough the maintain the seal when the pressure gets low and you will have a problem if you try to use the system to suck on the can in the early part of the charging exercise.
I have never successfully stored a can-side opened can, but I have a half a can (by weight) of HC-12 on my shelf that I found yesterday when I went looking for my tapper. It has been there since last fall.
Another can tapper (when I need one) will be less than 10$ and the one on the can of Dura-Kool is as old a R-134 (over 20years).
Dura-Kool is not just propane. That propane is very pure so it does not cause problems. The Iso-Butane that is the other part is also not normal butane (as in lighter fuel), it is an isomer of that butane. This means it has the same chemical make-up, but it is assembled differently. I assure you that if this was not worth doing to make it a good shot at R-12, they would never do it.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| [GMCnet] Re: Dura Kool, and Freeze 12 [message #365588 is a reply to message #365203] |
Wed, 21 July 2021 04:16 |
larry.schaffer
Messages: 2
Registered: July 2021
Karma: 0
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Junior Member |
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Sent from my T-Mobile 4G LTE Device
-------- Original message --------From: Matt Colie Date: 7/2/21 10:27 AM (GMT-08:00) To: gmclist@list.gmcnet.org Subject: [GMCnet] Re: Dura Kool, and Freeze 12 boybach wrote on Fri, 02 July 2021 12:34> pick up a side can-tapper, a set of manifold gauges and just use regular ol propane. Thats what most of that stuff is anyway.> > LarryLarry, I am not picking on you, you just happened to step into my area where I have a lot of experience, some at other people's expense.Regular "ol" propane is not all that good as a refrigerant. Believe me when I tell you it was tried on the way to inventing dichlorodifloromethane(R-12 as we all know and used to love). Also, "Grilling Grade" propane has an odorant add that is not of any value. If you have a system that is achronic leaker, regular ol propane may be a good choice as a diagnostic tool because it is cheap and you can find the leaks with a gas leak detector. I have done this a few times and usually to great success. Admittedly is was a few years back, but I have had a history of can side tappers. For starters, leaks were common because the sides of the cans are not robust enough the maintain the seal when the pressure gets low and you will havea problem if you try to use the system to suck on the can in the early part of the charging exercise. I have never successfully stored a can-side opened can, but I have a half a can (by weight) of HC-12 on my shelf that I found yesterday when I wentlooking for my tapper. It has been there since last fall. Another can tapper (when I need one) will be less than 10$ and the one on the can of Dura-Kool is as old a R-134 (over 20years). Dura-Kool is not just propane. That propane is very pure so it does not cause problems. The Iso-Butane that is the other part is also not normalbutane (as in lighter fuel), it is an isomer of that butane. This means it has the same chemical make-up, but it is assembled differently. I assureyou that if this was not worth doing to make it a good shot at R-12, they would never do it. Matt -- Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control ArmsSE Michigan - Near DTW - Twixt A2 and Detroit_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
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| Re: [GMCnet] Dura Kool, and Freeze 12 [message #365594 is a reply to message #365188] |
Wed, 21 July 2021 08:56 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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I still use R12. The little I know about HC12 products is that they are a blend. If you have a “Leaker” and use HC12 the lighter components are lost first, so over time, the blend % changes. This may reduce performance over time if you keep topping off
John Lebetski
Woodstock, IL
77 Eleganza II
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