In the old r-12 systems I used to buy a replacement that was butane propane mixture that worked very good. Now I can't find it local and shipping for a can or 2 is high. I remember back then there was a home brew where you put in a % of propane and a % of butane, Seems the propane was camp stove propane and the butane was iso butane sold in butane lighter refills. I can't find any of that fuel that is iso butane. All I find is a mixture of n butane and iso butane. Has anyone got any info. on the home brew r-12 replacement and where to get the right stuff?
- Thread starter ldj
- Start date
missouri massey man
Member
Personally I wouldn't use flammable refrigerant when there are several "drop-in" replacements that are reasonable. A product called "Hot-Shot" is a direct replacement for r-12 that has none of the flammable properties of the home brew butane/propane. Charge to 80 -85% full charge as the refrigerant blend will have a higher head pressure, but it will transfer heat very well.
There are a lot of techs that do not like the product, but there are plenty that do.
Also MP-39 (401 A) is considered a direct replacement for R-12. You may have to befriend an HVAC tech to make the purchase of either one though. But a 15 lb drum should last you a long time.
old_ky_man
New User
A can of R-12 normallg sells for $35 and about $5-7 for shipping. What are you being quoted?
Bill in IL
Well-known Member
Can't help you with the homebrew but a local company here makes a flammable brew of R12A. Check out envirosafe refrigerants.
old_ky_man
New User
$15.67 for 1 6oz. can of Duracool
Is that just for shipping or is that the Duracool and shipping?
The R-12 is a 12 oz can
Is that just for shipping or is that the Duracool and shipping?
The R-12 is a 12 oz can
uncle henry
Member
i got about 20 cans of r-12
TomA in CA
Member
I topped of my Jetta R 12 system with a little propane and it works again. It is not quite 100%, maybe needs a little more, need to get out a flashlight and check the sight glass.
Dick,
Most all the world uses the propane/butane and not many places in the world use R134a. Did you know R134a caused testicle cancer in laboratory animals? I have never heard of a butane/propane system burning except in tests. However I have saw a number of wrecks on the highway where cars have burned and it was from gas tanks. We are carrying a lot of flammable product in our car, 150lb or more. Butane/propane in the large ac systems is less than 2lb.You have undoubtedly read that propane/butane is flammable, which is true. You have also undoubtedly read that R134 and r12 are not flammable, which it true they way is is in the can or at atmospheric pressure. BUT what they didn't tell you is when mixed with oil and under pressure and sprayed out in a mist as it would be from a ruptured ac line, it is very flammable. So, if I use r134 or r12 I do have flammable product in my system. If I use butane/propane at least I don't have to worry about testicle cancer.
I have been using this site for many years and have ask a lot of questions and always got answers. Now I ask a simple question and didn't get answer. That is ok, maybe no one knows. What I did get was just like a bunch of politicians answering everything but what was ask.
Bill in Colo
Member
- Location
- Rio Blanco County, Co
Red-Tec made in Canada I think my supplier ships it ups
Glad to see you back
Bill
Glad to see you back
Bill
Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
I didn't choose to recommend that you install propane/butane for an AC cooling aid because that sets up a legal quagmire that I choose not to be involved in!!!!! That's the reason my tractors have R134A in the AC systems.
RandyB(MI)
Well-known Member
Well I am probably not going to answer your question either but ask one. Is this a tractor cab air you are going to charge? If so then what's wrong with a $20 bill worth of 134 ? I just did the air on a 1070 Case with 36 oz (abt $20) and it works perfectly and will freeze you out even on lo. Maybe if cooling a house it would matter but what's all the fuss if it's a cab? This is tractor talk after all.
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