My tow vehicle is a 2003 Ford V10 excursion with 158,000 miles. Four years ago I put the 6.0L tranny cooler in place of the stock cooler. Before the switch, my temps would routinely run 190-205 in 9...
That's all within normal. The only thing I would check is the fan clutch. You're at the age where the factory one may not be working anymore. Have you heard the fan fully engage this summer?