R12 to RS-24

[JonCheun]

Since R12 is expensive and I live in Las Vegas where it is 115 F here already. I have the original A/C in my 1981 T/A. I put 1.5 lbs of R12 that I had. It worked fine for about a week then leaked out. I am going to find the leak and fix it but I have no more R12.

Has anyone Converted their system to R134a. I know they sell retrofit kits at the parts store but does it work on T/A systems? I was told by a mechanic friend that they don't make a conversion for T/A system.

So I have been doing research on the internet and RS24 Refrigerant came up and it is replacement for R12. It says you don't have to change anything just empty the R12 completely out and add RS24.

Has anyone done the RS24?

[CastIron]

I wouldn't put anything besides R12 or R134a in a car. Converting to R134a should be possible. I'm pretty sure a friend of mine did it on his '81 Turbo T/A. You just have to find the leak and get some adaptors for the fittings. And make sure to use PAG oil instead of mineral oil. (lube any seals you're replacing with mineral oil) As far as quantity of R134a, I'd put a little less than how much R12 it takes, then watch the pressures and duct temperature. Add a little at a time until it is working properly.

[MARKDTN]

Originally Posted by CastIron

I wouldn't put anything besides R12 or R134a in a car. Converting to R134a should be possible. I'm pretty sure a friend of mine did it on his '81 Turbo T/A. You just have to find the leak and get some adaptors for the fittings. And make sure to use PAG oil instead of mineral oil. (lube any seals you're replacing with mineral oil) As far as quantity of R134a, I'd put a little less than how much R12 it takes, then watch the pressures and duct temperature. Add a little at a time until it is working properly.

I agree totally. 2 things 1) some substitutes have flamable substances inside. Do you want butane under pressure coming out in a wreck? 2) most blends have radically different sized molecules. Think BBs and ping-pong balls. When the BBs leak out you have too many ping-pong balls left and you can't just add more refrigerant, you have to blow the whole charge and start over. Not to even mention oil compatibility issues.

[Andy4639]

Get the leak fixed then vacum the system then convert to 134-a and use the stuff artic freeze it comes with a gauge and fill it up until it shows good. I did mine and it works great 45 degree's in the truck when it's 86 outside.

[airdale94]

Get the leaks fixed and stick with R12 if possible. Especially in Las Vegas. Here in KS you can get R12 off Craigslist from individuals. With the price of R134A now you can get R12 almost as cheap. On CL however, not parts stores. Your supposed to be EPA certified to buy it, but...If you get Freeze12 (R134A) it's compatible with R12 seals and oil.

[Tkmadone]

I have used hydrocarbon refrigerants for years with very good results. It is basically a mix of propane and iso-butane and yes it is flammable, but so is R12, R134, and the gasoline in your tank and fuel lines and carburetor.

Australia has been using it in cars for many years without a single incident.

http://www.es-refrigerants.com/resou...FRIGERANTS.pdf

It is much cheaper, doesn't hurt the environment, and is a more efficient refrigerant that the other options. RS-24 will work great.

[MARKDTN]

Originally Posted by Tkmadone

I have used hydrocarbon refrigerants for years with very good results. It is basically a mix of propane and iso-butane and yes it is flammable, but so is R12, R134, and the gasoline in your tank and fuel lines and carburetor.

Australia has been using it in cars for many years without a single incident.

http://www.es-refrigerants.com/resou...FRIGERANTS.pdf

It is much cheaper, doesn't hurt the environment, and is a more efficient refrigerant that the other options. RS-24 will work great.

I don't know where they are getting their information, but R12 and R134 are NOT flamable. Here are MSDS sheets on them. You will have some oil in any a/c system.

http://www.refrigerants.com/msds/r12.pdf
http://www.nationalref.com/PDF's...ts/MSD134A.pdf

You can use what you want, but I will use R12 until it is not available anymore. There is still plenty to be had. No way I use blends or flamable Butane mixes. Yes, gasoline is flamable, but is not usually squirting out under pressure in an accident.

[Ol Blue K20]

I've used the freeze 12 in my dually for about 5 years and still going. It was orig r12. I also use it in a couple soda vending machines that were r12 and the sodas are cold. Matter of fact i had to back off the thermostats froze sodas at first.