I would take extra measures to clean the tank out before hitting the road and run with it empty and then perhaps a wrap or three of duct tape to hold it in place.
A small pail or other container under it when parked to prevent ground contamination as a good idea.
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping