Mark Hofmann wrote to Roy Witt:   
      
    RW>> Should be done occasionally. My Silverado is ten years old and the   
    RW>> brake fluid is getting a bit dark...I'll change out what's in the   
    RW>> master cylinder and replace that fluid soon.   
      
    MH> I just wait for the lines to rust out, thus leaking all the fluid   
    MH> out.  :) That seems to be the norm for me.   
      
   It's more fun when the flex-lines crack and spring a leak when you need   
   the brakes the most...been there, done that @ 100mph.   
      
            R\%/itt   
      
      
   ... What Would Roy Witt Do ? - Cato the Elder - SD-138722   
      
   --- Hate Mongers and Morons, get your coffee and keyboards ready!   
    * Origin: Texas Lone-Star - Texan, American, USAian  (1:387/22)