I used Amsoil, and now I am sorry that I did. I have heard other people say the same thing here. Hard shifting into second, and hard downshifting into various gears. I am ready to try the Redline MT-90 based on the reviews here. I just want to know the cheapest place online to buy it. I paid alot for the Amsoil, and right about now I don't know if I really care anymore. I just don't want to have a tranny that shifts like crap anymore. It was fine until I put the Amsoil in there. Every Toyota I've had had a problem as soon as I changed out the factory juice. I even tried topping it off with the extra 2 cups, as discussed on this forum, and the shifting is still crappy. So where should I buy the MT-90???