I also have the 2010 F-150, standard tow package, 3 valve 4.6 motor. I tow at 55-58 in CA where the speed limit is 55 mph for towing. In AZ where the speed limit on the interstate is 75 with no tow restrictions, I still only tow at 58-61 mph.
The reason? Gas mileage and safety. BTW, I tow my 3023 w/o a WD hitch, but have never had any trouble with front end lift. My recent trip to Tucson AZ gave me 16.4 mpg.
Tom
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TM 3023
TV 2010 F-150 4.6, factory tow pkg, air bags
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