It's probably not. There are allot of *replacement* refridgerants on the market. But many not not acceptable by the EPA for use in automobiles. But are available for sale thru loopholes. You *alternative* refridgerants fall into 3 basic catergories: 1. Blend of non-automotive approved refridgerants. 2. Use illegal Hydro-Carbon blends. Ie. Propane, butane, etc. 3. Straight lie, and contact R-12. When it comes to HVAC restoration or retrofitting, the EPA's website is always a great place to start. http://www.epa.gov/ozone/snap/refrigerants/macssubs.html Now, here is something vital to know about the main difference between R-12 & R-134a. The R-134a molecules are ALLOT smaller than the R-12 ones. So, the old hoses on your system are not the best idea for them, because just like a rubber balloon slowly deflates as the pressurized gas inside leaks out the membrane of the balloon, so will R-134a leak out of your old rubber R-12 hoses. Your modern A/C systems utilize Barrier Hoses, rather than just the traditional rubber ones. Barrier hoses has a neoprene tube inside the rubber, so that the R-134a cannot bleed out. Now, something to keep in mind here is that non-automotive refridgerants, such as R-22 are used as a part of the blend for many R-12 alternatives, such as "Freeze-12". Per EPA guidelines, R-22 has simular properties to R-134a, and must be used in conjunction with barrier hoses. Otherwise, if you just inject Freeze-12 or simular refridgerants into your stock R-12 system, you need to realize that WILL LEAK OUT eventually, and you A/C will fail once again. Where as R-12 will last many years more. So when dealing with R-12 A/C systems on automobiles, you really only have two choices to insure long-term reliability: 1. Repair the defects, and restore the system back to R-12 2. Retrofit the entire system, and use R-134a. -Robert vin 6585 "X" --- In dmcnews@xxxxxxxxxxxxxxx, "robert parker" <roberthparker@xxxx> wrote: > > How is this different from "Freeze 12"? (a Johnsen product) I understand > this, too, is compatible with R-12, and I paid $3/can for them. Stay > cool. Drive Stainless Robert VIN 6924 > > From: "thebrave65" <ssawyer37@xxxx> > Reply-To: dmcnews@xxxxxxxxxxxxxxx > To: dmcnews@xxxxxxxxxxxxxxx > Subject: [DML] R12A > Date: Thu, 17 Mar 2005 23:54:38 -0000 > > > > > I've been hearing that R12A is a good replacement for R12. From > what I understand, is has a lower boiling point, takes less per > pound, is colder, mixes with R12 and is bio-friendly. To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/