Just installed a used AT and engine,  new screen and like 50% of fluid.
Drove it for about a week and have drained another 2.5 quarts still erratic.
  Dives nice for a while then it starts to not want to go into 3rd then
suddenly its there.  Im using cheap fuild for the flushes but im having
trouble finding a dex 2 only fluid.  Going to use sea foam AT flush before i
take it to a shop for a 100% flush (if it will work on a vanagon AT)  and
Mobil 1 synthetic AT fluid.  But im worried,  the fuild i drained to day
still looked dark and foreboding.    Anyone use any of these produtcs   Sea
foam flush , mobil 1 at fluid ?
   looking for some testimonials.
Thanx
Raul