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

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