what's everyone greasing their hitch with? always just used a smear of Vaseline on the ball but suspect now that I have a pro series WD hitch that calls for grease with each use I should get an oil? L...
I’m curious how there could be enough friction to overcome a properly torqued ball shank nut. It seems to me that if grease is the only thing preventing the ball from loosening there’s a serious issue with that kind of design. I have no data, just my opinion.