TW> Oil Additiaves are an interesting area.   
   TW> It you are fimilar with an Auto Tranny Fluid called "Trick Shift" it has   
   TW> a Friction Improver in it that firms up the transmission shifts.   
   TW> As I recall Ford used it for some years in their Auto Transmission   
   TW> fluid.   
      
   No, but I have used "No Slip" additives before in the transmission.  They   
   typically swell the seals and also have a foam/bubble preventer to keep the   
   transmission from getting air bubbles in it.   
      
   Normally the air bubbles in the fluid are from it being overfilled.  I have   
   found this out first hand.  I used my evacuator to remove about 2-3 quarts   
   from both my car and the truck when they came back after repairs with too much   
   fluid in them.  It would cause bubbles in the fluid and an occational slip.     
      
   That is one thing about tramission fluid.  You must have the right amount -   
   not too little and not too much.   
      
   - Mark   
      
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)