http://www.youtube.com/watch?v=bWVU2NU-Xkw

Watch this video before deciding to use a leak sealant in your a/c system. Especially make mental note of the compressor that was taken apart after leak sealant used in system.

Although this video is a sales tool for a sealant detector, I am not trying to sell you one. I have nothing to do with these people. I am posting this for your information so that you can know what you're very possibly in for if you put any of this junk in your system.