Highest temp between Moab and Grand Junction was 230. Transmission checked by Allison shop yesterday. Everything checks out good. Hoses in good shape, radiator and CAC clear. I found a hydraulic hose that had been worn down by the serpentine belt which they replaced, $ 195.00 for hose alone...ouch! Changed Wic transmission filters out for Allison just in case. Service manager says they have had a lot of problems with the type hydraulic fans in my coach and he suspects that is the issue. Bottom line is when transmission temp goes up, down shift or slow down. I will update after a long enough drive to see if the problem was the non allison filters in the transmission.
Jerry