> So....How can you tell if you have the explosive stuff in your car or > Freon can,(or someplace/somebody is installing the explosive stuff) > outside of having to wait for a explosion to happen. Claude, A neighbor of mine as a joke filled a balloon with an oxygen/acetylene mixture from a welding torch. He filled the balloon to about the size of a basket ball. He tied a string to it and thumbtacked it to a wall. Then he lit the string like a fuse. When that thing exploded, it broke every window in the shop, and he thought that it would just pop like a firecracker. Acetylene isn't propane, but they are very similar. Sometimes one is substituted for the other. I suppose that to test a system, you could drain a little (and I do mean *little*) amount of refrigerant into a balloon and light a match to it *outside* to see what happens. Another interesting thought: One of the ingredients of Mustard Gas is a combustion byproduct of freon. Walt