TW> One has to pay careful attention to the instructions as it is very easy   
   TW> to Overcharge the system. And it causes problems, some of which can   
   TW> damage the compressor.   
      
   Yes, overcharging can damage the compressor and also make the system not blow   
   cold air.     
      
   Most of the re-charge kits available come with a gauge on them.  I would   
   highly recommend using one of the hoses with the gauge so you are not blindly   
   adding coolant.     
      
   I have two of those hoses that I put on the cans when needed.  I used to carry   
   one around with me in the Monte Carlo when I had the leak.  Now that it is   
   fixed, that isn't really necessary.   
      
   - Mark   
      
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)