Veebyes wrote:
Actually yes, you are correct. WD40 is fish oil based. Has no real staying ability. My usual goto product is something called Boeshield. Been using it on my boats for years. Developed for Boeing, it becomes a waxy substance after a few hours. Another product, LPS 3 is somewhat similar.
None of those are a good lubricant for your hitch. Good corrosion preventatives, but not much lubricant value.
I use motorcycle chain lubricant in a spray can. Sprays out easily through the straw, right where I want it, penetrates well, and then sets up and clings. Doesn't attract dirt once it is set.