Loaded up the truck and boat today to head to central Oregon for a few days of recreation. In moderate traffic trans temp was climbing higher than Iíve ever seen it. Towing the boat I typically see about 160-170. Today it climbed up to 190 then up to 210.. Once on the freeway I got it down to 185-190. Slow 3 mile descend to the campground it climbed up to 250 for a couple minutes. I have a magnefine inline filter that hasnít been change in probably 60,000 miles. Iím going to change that out before I leave hoping it is just plugged. I have an aftermarket cooler that has been on since I bought the truck with 30,000 and have 190,000 with never a tranny problem. Not sure why it is all of a sudden heating up. Tranny oil is still nice and red and not burnt. Lines in and out of the cooler were not hot. Any thought?
97 F250 California Model, down pipe, DP Tuner, ATS intercooler, 170K, Beans electronic fuel delivery, gutted EBPV