First, if your original R-12 system is working fine, don't worry about it. If it starts leaking, then rather than buying cheap questionable alternative freon to keep filling it, or spending the $$ to convert to 134A, JUST FIX YOUR ORIGINAL SYSTEM! Stop the leaking, put the R-12 back in it - problem solved. Yes R-12 is expensive but if you are not leaking it, who cares. It's a one time expense to do the job right, then you move on. I don't care how well the converted 134A systems, or this Freeze 12 stuff people are putting in their systems cools... blah blah blah. As well as those cool, R-12 simply cools better, and it's what belongs in there. If your system is not leaking, you're not going to have to keep paying the R-12 price. Lord knows what that Freeze 12 stuff is doing to the system while it's "working". Sure, it's cooling, but who knows what's slowly happening to your system as the result of it's use. You never know, one day what started as just a leaky hose could turn into a need to replace the whole system because someone was too cheap to fix it right the first time, and took the easy half azzed route. Don't ask me how I know this. As far as R-12 availability goes, there's a ton out there. If you're that concerned about it, get certified to purchase it (easy) and buy a supply of it to put away. A properly functioning R-12 system is the best possible means of cooling the passenger compartment. If that's what you have, just keep it maintained. Dan W. VIN 16192 --- In dmcnews@xxxxxxxxxxxxxxx, Rod Dillman <rhdillman@...> wrote: > > I noticed from an earlier post that some are using Freeze 12 to replace R-12 in our origional AC systems. Are the two compatible so that Freeze 12 can just be added to an R-12 system that is getting low on refrigerant or does the R-12 system have to be evacuated first? If so, does anything else have to be done to the system before adding the Freeze 12? I have been fortunate and have never had to add R-12 to my DMCH refurbished car in the 5 years I have owned it. I plan to stick with R-12 as long as it is available if I need to add refrigerant to the system. If R-12 becomes unavailable is Freeze 12 a better alternative than 134a? Thanks, Rod 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/