Oil, gas and maintenance when towing
 

I have an 2017 F150 3.5L eco boost and tow an 3000 lb. camper (when empty). Truck is relatively new- 3 months, 3500 miles. We're going on a 5 week trip soon- any recommendations for changing my oil so soon- before the trip? Any other pre-trip suggestions truck-wise? Also, I believe Ford handbook kind of suggests using higher grade than regular gas when towing. Some service people told me not necessary. Any thoughts would be appreciated.