Over the years there have been so many posts about
external ATF cooler line check valves,
leaking external lines
and engine coolant contamination of ATF
on Chrysler vehicles.

If you spec an OEM ATF that can keep its lube properties at higher temperatures for longer,
many of the above “failure modes” disappear.

It might be possible to design in more external ribs on the aluminum trans casing to carry away heat without a cooler.

My gut tells me:
one transmission and differential
should outlive two engines
because conditions inside an engine are more extreme
but in the real world that has not been true for several decades.

But obviously that is not the root cause of Rhino’s trans curse.

Sometime in the distant past he thought some profane thought about transmissions,
and now the GODS of gears are angry.

A goat must be sacrificed on a mountain top.