disk with lube on the lower pin where the jaw grabs . I found HD sells a spray dry lube that is for garage door tracks that is easy to keep on the pin and off your clothes if you in and out of the front basement.
Mark & Melissa
2015 Redwood RL38 , Kodiak disk brakes , 17.5" tires , 8K Morryde IS , 2020 GMC 3500 DRW
Plastic disc all the way! Rain used to make a mess in the bed of the truck with grease. Never again. Been using the same plastic disc for 5 years now and no reason to change it. I bought an extra just in case and it just sits on a shelf.
Back in 2019 I backed into the hitch only to have one of the plastic tabs on the “lube” plate bend down and engage the lever that allows the safety pin to drop in without having the pin fully engaged. It was raining pretty hard and I only took a cursory look at the jaws to see if they were closed. I have since painted the jaws so that I can easily verify they are closed. It passed the pull test but when I started to turn out of the campsite the trailer dropped onto the bed. I now only use grease. I hang our welcome sign on the pin box, which helps steer people away from the pin and I usually don't spend much time in the bed of the truck and have not gotten greased by the hitch other then when I remove it, I sometimes get some on my hands.
Rob & Kathy
2014 Dodge 3500 Big Horn Manual Transmission