kingpin lube

We went with a slip plate, it has worked fine for the past year and no worries about getting grease where I don't want it. I get enough of that as an OTR driver already.

Slip Plate is the only way to go on the pin and jaws. I use it on the socket of my B&W it makes getting the hitch back out much easier. Tractor Supply sells a graphite paint that is exactly like Slip Plate brand, color is a little different though (darker grey).

Cleaned the king pin last night and started spraying slip plate on king pin and inside of hitch jaws. This will work especially if it works on Super Glide rails. I know it will need to be refreshed before every trip. I'll pull 400 miles Tuesday. I know it will be fine, but still interested how it will look after a days pull.

I use nothing Slip Plate graphite dry lube on any areas that are exposed to water and wear that are sensitive to dirt. Great stuff! Phillip
http://slipplate.com/index.php?main_page=product_info&cPath=1&products_id=4

"a little wear after seven years"??? You are probably OK!

Although the 'WD' stands for 'water displacment' WD40 does contain lubricants it also contains anti-corrosion agents and ingredients for penetration and soil removal.

But doesn't last long....hence the 'spray it on before each trip'

I prefer Slip Plate.
I give my hitch an occasional spray on all pivot points and any place where there is metal to metal contact.

King pin....I wipe a thin coat of heavy grease just on contact surface

I also use a Lube Plate on bottom of pin box.

I had a 18k Pullright for several years . Grease is fine but don't go heavy. It tends to work down into hitch and makes miss. I really think you could use slip plate. I just got a F350 DRW with pucket hitch ready. We installed a B&W. Im going to clean king pin up really good and spray itand hitch jaws with slip plate. Should work and wont attract dirt.