Uh, what is XO primer?
Wonder how it would be to grease the shiny parts instead of painting them? Quicker, faster, easier, cheaper. The shiny parts won't stay painted but will insist on being shiny as soon as you use the implement again so you will get temp rust protection, at best, from any paint job no matter how you prime and paint or how high the cost of painting.
Never heard of a paint that would stay on something digging in the ground.
Anybody got a problem with a liberal coat of grease?
Patrick