I'm pretty new to towing, so I thought I'd seek some advice. I have a little harbor freight trailer that hooks up to a 1-7/8" ball. I used to tow it with a Subaru, and the ball got all covered in copper marks that seemed like scratches- mostly on the left and right sides of the ball.
With the Tacoma, I got a new hitch tongue and ball, and hoped that this time now that I was better with lubricating the ball and getting the hitch to the right snugness, I wouldn't scratch up the ball. Yet here I am today, towed the damn trailer maybe twenty miles and the ball already has those copper markings.
Does anyone know what they are? What they are from? Do I need to care about them? I'm not sure they actually are scratches- the ball could easily be plated, that part I buy, but the only copper-colored metals I know of would make terrible hitch balls.
Right now I use a very light coating of hi-temp axle grease.