3 speed auto transmissions

[Greg Reimer 7376]

Seems to me that when the 700-R4 came out,the instructions in the owner's manual stated that the consumer was not to tow in the overdrive range. Subsequently, nearly all if not all the automatic overdrive transmissions since then seem to all state the same thing. Driving back through a set of planetaries seems to create a reliability issue when under that much load.