Yesterday I plowed with my 06 Mega cab for the first since replacing my F250. I put the extra cap trans pan and gauge on 6000 miles age. On my way to site running in 4wd the Trans temp made to 185. Got to site and let it sit in N so T/C would exchange fluid and temp drop to 130(the gauge acted as if a stuck thermostat popped open). Plowed 2 in of snow in a large parking lot as air temp got warmer and snow got heaver temps never went over 155. I also drove that truck across town to another job and did not see high temps again. Any idea on what may have caused spike and what is high limit for Trans life. Truck also has Smarty Jr set #3 and with tow mode.
Thanks
Thanks