Haven't worried about it.
If I drive around town, chasing errands, I never get all that hot,
If I tow up a steep grade and get some serious heat going, It is usually offset by the downhill grade on the other side of the pass, so everything is usually cooled down by time I need to shut off.
15 F350 CC Lariat SRW LWB Ruby Red, Ultra Predator Wheels with Toyo 295/65R20, BAKflip Fibermax tonneau, Diesel Products LED lights in the rear bumper and 20" light bar in the front bumper, Firestone Airbags and Airllift Wireless compressor.
11 F350 CC Lariat SRW LWB Tuxedo Black Sold at 145,000 milesl