[chiph]

Even if you flip the fluid flow direction (based on FSM label "ATF Cooler Outlet") so that hose is actually feeding the transmission, that would mean the transmission itself is dropping the temp from 141F to 81F. There's no way that can be true - even if you posit that it's presence in the airflow under the vehicle allows for cooling effects, it's proximity to the engine and exhaust would make that implausible.

Yeah, there's something else wonky.

Chip H.

 

[chiph]

I expect the water-to-fluid intercooler inside the radiator is there to ensure a more-constant temperature. Whether it's bringing the transmission fluid up to temp in the winter, or cooling it down in the summer.

Chip H.