Yeah I know, I wanted to service my transmission and had a hard time just finding the stuff. You can buy Amsoil sythetic
for a little over $7. 00 a quart
Tom G. found some Valvoline Maxlife for 2. 44 a Qt and it is supposed to meet +4 specs. I called Valvoline and the tech said
it was fine to use in +4 requirements.
I tried some and will be testing it this weekend in some hot weather and pretty long grades.
When I modify the transmission It will be changed over over to either full synthetic or Dextron lll. Lots of guys with the modified transmissions are using straight Dextron lll and seem to like it.