I use a white poly disc on the pin, and TriFlow (telfon) spray on the jaws and other moving parts of the hitch. I can't get the white lube into all the needed places, but the teflon spray gets in there just fine.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.