I have completely flushed the auto transmission in my 1992 Accord with ST Multi Vehicle ATF. It lists Honda's ATF Z1 spec on the back, along with a bunch of other specs as well.
I have about 5000 miles on the fluid since doing the complete flush. The transmission shifts smoother than it did but, I just attribute that to the new fluid, not necessarily any special properties of the Super Tech.
I also used Castrol Import Multi Vehicle in a 1990 Accord that I had. I put 40,000 miles on that fluid in that car. It seemed to have firmer low speed shifts compared with the ST fluid that I am running now.
I don't think you can go wrong with SuperTech fluids, especially on an older used car. Just like engine oil, the fluids all have to meet similar specs. So buying a pricier name brand ATF just takes more money out of your wallet if you have an old car that just needs a fluid change to keep it going down the road.