I have run the T6 a couple times but when I do the transmission just feels notchy. It takes more effort to change gears, just not as smooth as Amsoil for me, but on the other hand when I run Amsoil sometimes onder really hard acceleration it feels like the clutch slips a little once in a while. Maybe it is too slippery.
I just changed the oil about 100 miles ago with T6 and changed it again the other night back to Amsoil, definitely shifts better with Amsoil.
