928man

Has anybody used Freeze 12 in R12 systems? It is supposed to be compatible, wonder how efficient it is for A/C R12 systems?

dprantl

I would not recommend it. Do a search, there is some information about this here.

Dan
'91 928GT S/C 475hp/460lb.ft

fraggle

isn't it a propane mix? boom!

j.kenzie@sbcglobal.net

The biggest problem with alternate refrigerants is that you will have trouble getting a shop to work on your a/c system. They don't want to contaminate their machines and you will probably not easily find a shop with a freeze-12 machine. As to flammability, freeze-12 itself is not flammable; however when mixed with a/c oil and aresolized as by a broken or cut hose, it forms a very explosive mixture. The same is true for r12 and r134a. The best advice is to use either r12 or r134a depending on cost and availability.
Good luck,
Dave

928 at last

You may want to consider a quality (race) HALON fire suppression system install too.
Just a thought.

BobS!

R12 works for me.

I'm no chemist but did some research and it seems safe enough.

SteveG

It's compatible. Your choice.

86'928S MeteorGrey

AHHHHHHHHHHH!!!!!! That looks like my car! DONT DO THAT!!!!

Is this photo from a Freeze-12 problem, or a fuel line?

My car has been converted to Freeze-12 too as I have just noticed....

Should I change it out? Is it really that dangerous?

dcrasta

I've used freeze 12 in all cars that I didn't convert to R134. I'ts suitable but you have to service the AC as far as making sure you have no leaks. I would only use it if my R12 system was sound, but just needed a topping off. If you have leaks you might as well do the work to convert to R134.

dprantl

If you need to top off a refrigerant system, you have a leak. Maybe once every 7 - 10 years is ok and can be attributed to the rubber hoses.

Dan
'91 928GT S/C 475hp/460lb.ft

blown 87

Freeze 12 is not flammable by it self, any freon will combust as a aerosol under pressure when mixed with oil and sprayed over a ignition source.

I have used a lot of it, and it is not my first or second choice.
Just use R12.

SteveG

Further on the mixing issue is the fact that the molecules are different sizes and leak out a different rates, has something to do with the oil as well. I'm sorry I don't have the quote from the thread that is more informative. The point is you then do not know how much of what is in there and no way to measure it.

Ispeed

Why don't you just fix the AC right.
new O rings, expansion valves etc find the leak (!!!) and put in the correct R12. You will have nice reliable AC then.

BobS!

Where do you get R12? I have not been able to find it at any price. Please don't say e-Bay or any other source the can ship a can labeled R12 containing propane.

dprantl

What? I have bought many many pounds of refrigerant on eBay and not once did it come with anything other than the advertised contents. If it comes in a Du-Pont container and is labeled R12, you can be 99% sure it is. This is especially true for the 12oz cans that are sealed and must be punctured to release their charge.

Dan
'91 928GT S/C 475hp/460lb.ft