1989 plymouth voyager 2.5L 135,000 miles. Picked it up as a work vehicle this spring. To my suprise the AC still worked. I've never seen a chrysler product go more than 5 years without the AC failing, so either someone put money into the AC or this is a one in a million mini vans. Anyways.....you can tell the AC is not quite as cold as she should be (I think it just needs a charge). I'm making the assumption that it has R12 still in the system (basically assuming no one has converted it to R134). Instead of paying out of my ass illegally for R12, I see you can buy the product Freeze12. They advertise this as a replacement for R12 that does not harm the environment and you don't need a liscense to purchase, and is approved by the EPA. You don't need to vaccum out everything out of the system, it is compatible with the existing oil, simply remove the old R12. You can buy the complete kit of something like 3 cans of freeze12, oil and the hoses to get the stuff into the system for like $55. This seems reasonable. My question is, is this a scam, or will this stuff work just as good as R12?