Tad, I forgot to mention, the dye for A/C systems is really just compressor oil with dye in it, so adding dye is actually beneficial.

If you are low on compressor oil, then the addition of dye (oil) may restore the health of a bad seal.

I have often wondered why there is no dye in the system from the factory; coolant and ATF get dye, so why not A/C systems? It would have made my life a lot easier in the shop...

The sealants are not a good idea. They tend to be hard on compressors and can gum up an Expansion Valve.

FYI, to all, run your A/C once per month (year round) and you will likely never experience an A/C leak. This keeps the oil circulated and keeps the seals coated, helping prevent deterioration of the seals and a leak of refrigerant.

Good luck, keep us posted.

Nate