Originally Posted By: hounddog
Everthing I have read about ATF*4 is that its a Group THREE semi synthetic.No mention anywhere of it being a Group 4.There are only a few Group 4 synthetic trans fliud out there and Mopar ATF+4 is not one of them.If I'm wrong show me.
Many ATF+4 fluids are full syn, such as Castrol and Valvoline.
Given how much less they costs versus Amsoil, I'm sure Castrol and Valvoline are all group 3, possibly with some other groups mixed in.