I'm talking about engine coolant here, not transmission fluid temp.

The trans temp went up as well but nothing that I thought was dangerous.

I had been running in 4th gear the whole trip, if I'm on level ground with the camper I can run in 5th gear, but any kind of hills I loose too much speed so I usually always put it in 4th when towing the camper.

I'll check for bugs, other obstructions etc. I've heard the fan clutch engage when stopped for a while in hot weather, but I didn't hear it engage this time, but I would think it would be hard to hear at 60mph, but maybe not? Maybe replacing the fan clutch as a precaution would be a good idea.