I had 3 "hydo-junk" transmissions in my 91 Voyager. At 120K, and for the 3rd time, I had to pay for the rebuilt one, and the local shop said to use Amsoil's fluid. 240K now on the van, and my brother uses it as a work truck, installing carpet. Nary a tranny problem again. I'm sold on the Amsoil Universal ATF, and change it in all my vehicles every two years or so.