Towing 10k?

Hello , question for towing guys , what are gauges reading on while tow mode of trailer , water ,tranny temp , oil temps etc and what gear in tow mode switch on ? Thanks I try the other day on a cool day for first time to tow my 26 enclosed car hauler with out car , rad 205 F tranny 175 F oil temp 168F 6-7 gear at 65mph . I have install air lift bags set at 35lbs no issue there will see with car but i do have level bars should be good . Looking to see how some guys towing to max how temp read and what gear tranny is in ? Thx

Trying my first tow on monday , took it just down the road 10mins to a cat scale , 26 haulmark enclose trailer with 1966 nova , wt 7400 lbs and with truck GVW was 14400 lbs , mpg was reading only 9-10mpg , going to guelph about 3 hr drive to get some work done on car and will be all highways so will see how temps read and gear - tranny shifting and mpg , will post results later

Towing went well mpg reading about 11-12 most level roads ,min wind , stay in 7th gear ,water 210F tranny 165F oil temp 212F power was good no issue at 60-65 mph I only wish i had upgrades tire a bit could feel some bit of tire roll other than that motor and truck did good job