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Re: Dura Kool, and Freeze 12

L
larry.schaffer
Wed, Jul 21, 2021 9:16 AM

Sent from my T-Mobile 4G LTE Device
-------- Original message --------From: Matt Colie matt7323tze@gmail.com 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:

Sent from my T-Mobile 4G LTE Device -------- Original message --------From: Matt Colie <matt7323tze@gmail.com> 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: