Freeze 12???????????
 

anyone tried this stuff??

http://cgi.ebay.com/ebaymotors/ws/eB...908091878&rd=1

It works OK, I've seen it used as an inexpensive way to recharge oler r12 systems. It wont cool as well as r12, but does fairly good. I've never tried it in a 67-72, but with the size of the AC system and the tiny cab on our trucks I would think it would work pretty good.

I haven't tried that kit but I did buy a simualr one at schucks that converted my r-12 to r-34a it worked good (although I think that the r-12 was colder), and it was about the same price buy the time you add shipping. Gook luck and post if you try that stuff.

I had converted my 84 with freeze 12 and it cooled allright. When it leaked out i went with an r-134 conversion. It was a lot colder than the freeze 12 and a lot cheaper and easier to come by.

I converted my truck (and two cars that I don't have anymore) to some stuff called "Autofrost". The stuff works great! It was marketed as a direct "drop-in" replacement for R-12. And, it is charged at 80% of R12 and blows "Ice-Cold". I bought a 25-lb bottle about 5-years ago and I think I have about 8-10 lbs left. The old truck leaks a bit and I have to put about 1 or 2 lbs in each year. When I start the restoration on the truck, I will probably buy another bottle (if it is still available) cause it blows colder than the R-134a.

TP :bowtie:

I haven't re-charged my '69, because I need to replace the seals in the compressor, but I did have my '91 Celica charged with Freeze-12, and it works okay. I think I have some restriction at the expansion valve, but that seems to be the only problem.

Someone said that Freeze-12 is a blend of R-12, R-122 and R-134a. I don't know if that is fact, or not. I am happy to be riding in the A/C, and not the heat and humidity that we have.

What I bought ran about $6.50 a can. I still have 3 small cans of R-12, and my dad has 3 more that he is giving to me as a part of my inheritance.

Thanks guys, I think I'll pay the extra to have my truck charged with R-12 based on your comments

I'd change out the o-rings and the dryer and convert to 134a as my first choice. I have had the conversion done on several vehicles and it works very well for me. Any DIY backyard mechanic can do the o-rings and the dryer then have an A/C shop evacuate and charge it. Make sure all of the hoses and operating hardware are up to snuff to begin with though.

I heard the 134 wasnt as cold as the r12, I just bought a new dryer, hoses, o-rings, valves, gaskets, etc., and the only reason I thought about going back to the R-12 was a colder system as I'll be moving to arizona soon, where its a buck twenty in the summer, is the difference that minimal?

I think it depends on the individual system. Some convert better than others. Alot has to do with the original types and sizes of components. I'd consult a good A/C shop and ask them. Around here it gets way into the 90's and sometimes over a hundred in the summer and the cars I have done perform every bit as good as they did on R12. If it's for a 67-72 truck ask the guys a t Rick's what works best in the heat. They'll know.

Ok, Thanks Stingray
BTW, yes, its for a 72 pickup

R134 will work almost as well as R12 but has to run at higher PSI to get the same results. If your original R12 system can make enough PSI for the R134 to work well, you wont notice a difference. You can't mix R12 and R134 or you will screw up your system. I converted a 79 Toyota truck and a 90 Mustang and they worked great with R134 but both were pretty small interiors.