Originally Posted by ps2cho (Post 2588788)

There are plenty of people on craigslist selling R12 (You can legally purchase it with the intent to resell...to someone in your household for 0.01 of course)....I bet you could get away with buying it without even having the license. The whole CFC's making holes in the Ozone layer are about as scientifically supported as global warming has with the use of cars :rolleyes: It is all media and almost zero credible science.

Explosions due to improper refridgerant such as propane can and do happen:
http://forums.rennlist.com/rennforums/928-forum/145159-the-joy-of-ocic-and-one-sad-note.html
http://www.ed.scherer.name/2004-928O...small/5-05.jpg

Only reason I would use propane would be for diagnosis only if you have a leak since it is so cheap and you can smell it. That is what I did for my leak so I didn't have to keep throwing $6 16oz cans of r134a in...After that my evaporator was pulled out, I flushed all lines fully, drained the A/C compressor. 100% r12 fresh system.

My dad's 190D shows paperwork of 6+ A/C compressor replacements. It it an r134a switchover....Makes you wonder....