[Tbos]

I have a 4.8 V-8 with a 4 speed auto transmission with tow haul mode. I have the towing package that includes a cooler. When I tow even in the fall weather the temps rise to about 170f. I'm towing a lightweight TT and combined gross weight is right about 10k which is the limit for the TV. In the Summer the temp went up to about 200. The fluid still looks and smells OK. Only have 12k miles on the truck. Engine temp runs at 212 all the time. What should my transmission temp read? When should I be concerned? Thanks.