On Mon, 10 Jun 2013 22:13:35 -0400, "Eisboch" wrote:

The recharge "kit" refrigerant contains a lubricant and a "seal
conditioner" that is advertised to stop the leaks caused from non-use,
assuming the seal is not destroyed. They also sell replacement seals
and a UV dye and light kit that you can hunt the leak down with.

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If that doesn't work I have an electronic leak detector that I use on
the boat refrigeration systems. It has already paid for itself.