Has anyone used redline....looked in the interwebs and that was one that came up and says it works with the rams tranny
So the reason why they use PAO oils because they choose a very thin oil and they don't want it shearing down over time. That's a fact. Redline d6 would be the proper redline if you chose that, and would fit the bill for their spec.
So atf 4's maxlife and others, do not meet the spec as far as starting viscosity, but they work as sean on eco diesel proved. Which would be redline c+ as a comparable product to maxlife.
Changing fluids and level is such a pita with the 8 speed, I might go higher quality fluids and change less often. Now sean changed his fluid very often, in which case maxlife worked perfect, who knows maybe it would work even with a long oci, dunno. I know if you are in a snow state, redline d6 will give you pao oem quality at a fraction of the cost of oem. The oem spec is a real good idea in cold places, that maxlife would be plenty thicker at start up then redline d6 or oem pao z8 fluid.