I used the amsoil in my auto tranny, and it worked perfect. The guy that recommended that stuff to me knows more about oils then I ever care too. It's his life. AWD Binding is basically your car being stuck in all wheel drive all the time. When ever you go around corners your rear wheels "bind" (basically you will hear them cracking and popping) due to the less distance they have to turn. Basically sounds like your rear end is going to explode (The rear end on your car that is!)

It is differential fluid, it's designed to be poured in you differential, but it also unsticks the transfer plates in your auto tranny too. What cant it do?