Both will work but they will attract dust and dirt so it could compound the problem.
So use sparingly and keep the frames clean.
I'd go with the white grease.
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