30 Sep 11 14:39, Mark Hofmann wrote to Roy Witt:   
      
    RW>> It takes a black lite to see the dye...   
      
    MH> Don't know why I didn't already know that.  Glad I didn't call the   
    MH> show to ask what color dye was used. :)   
      
    MH> I ordered one of those UV lights that will detect the dye.  Will be   
    MH> on the hunt for the small leak.   
      
   Kewl.   
      
    RW>> I don't recommend it, but they make an AC sealer that you can buy   
    RW>> with your next AC refill...the sealer is in the same can as the   
    RW>> R134...sooner or later you're going to need some oil in the   
    RW>> compressor. If you don't, it may fail on you and then you'll really   
    RW>> be in trouble.   
      
    MH> The stuff I have been adding (Artic Freeze) comes with the R-134a,   
    MH> stop leak, and oil all mixed in the can.  I went all summer without   
    MH> adding any, but just had to put a 19oz can in there to get it blowing   
    MH> cold again. Apparently it isn't a huge hole, since it takes 4 months   
    MH> to leak out 19oz.   
      
   That's about half of your anti-freeze. Most systems take less than 1.5lbs   
   (48ozs) of it.   
      
      
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