Go somewhere in appalachia and ask around. That's where they use it...
Yes, please do ask the people in Appalachia regarding the use of Supertech fluids; if you do, I guarantee they will ask you if you have a problem they can help you fix, and they will do everything they can to help you in any way, as people there still have a sense of community and help one another as a rule of life. The difference between asking people there and the "people" here in "So. Nevada" (Henderson / Las Vegas) is that people here won't lift a finger to help you, although I am not so sure that is such a bad thing since most people here are lacking in the intelligence department.
I have lived all over the world, including Appalachia, and am here to tell you that jokes about the fine people of the Appalachian region are largely unfounded.
Stepping down from my soap box....
By the way, I have been using AMSOIL ATF in place of T-IV in my Toyota for the last 104,000 miles with no problems.