I use Amsoil and have in my 02 Explorer for 262k miles now. I have it everywhere in all my equipment too. My 70's bulldozer I run it in the engine and final drives. My 70's David Brown tractor I run it in the engine and final drives. I do not run it in the hydraulic systems due to constant leaks and the expense required to replace it.
My exploder has it everywhere there is an oil lubricant, from the transmission to the engine to the differentials and transfer case.
I'm more than happy with the service it has given me, and the cooling it has given my tranny, since I tow once in a while (more weight than I should probably).
I don't know Tim, but if he's like other salesmen, I probably don't want to either! I avoid salesmen like the plague. One of the reasons to visit the Amsoil site and get what I want. They credit my purchases to some "upline" like Amway or other mlm business, but I don't care since I don't have to deal with them.
My 2 cents