Haasman:
I have no real knowledge of automatic transmissions.
Surfing the WEB as I often do, I've read more than one post by person(s) claiming to be techs who indicate synthetic is too "slippery" for alot of transmissions.
I'm not sure if this "slippery" thing affects older transmissions for the good or worse.
I belong to a number of forums, especially asian. Alot of foks in those camps swear up and down by this stuff and conventional transmission fluid(whatever yours uses). I have not used the stuff.
http://www.lubegard.com/automotive/trans_atf.html