Is there some kind of thermostat or thermal controller on the transmissions? I noticed on mine the temp can go up to 93c or 200f. unloaded and stay there for awhile. then it can drop down to 82c or 180f. the coolant stays the same temp throughout out this temp fluxuation. 2016 big horn 4x4 3.92 gears. I changed out the front grille to a honeycomb style. noticed the coolant and oil temp runs a little cooler.