i'm using the gear lube, also known as amsoil MTG. not sure if the MTF will work the same because it has different specs but right now i have 0 problems and it handles heat better than the stock fluid.
I've used Amsoil MTG and Redline MT90. I recently switched to Ford XT-M5-QS. It's vastly superior for our cars. I've used Amsoil for 22 years, but the Ford stuff works best. It's just hella expensive.