Who here applies grease to the trailer ball / coupler before towing? If you do, how much? I keep mine really greasy and don’t have much in the way of issues. I also grease the surge brake slides and pins. I also oil the coupler pivot points and spray the brake master cylinder area down with WD40 to prevent that from rusting up so bad.
I have towed a 9k lb camper for 4 years and about 15k miles using this process and the ball for that hitch is still shiny with only minor scuffing on the contact points with the coupler.
The boat is only two years old and probably less than 5k miles and that ball looks basically new. Greasy, but new.
I cringe when I see pickups running around with rusty balls and hitches…