Should you grease hitch receiver?
To protect the hitch ball while in use we recommend applying ball grease to make sure it pivots smoothly while inside the coupler. ... If you're going to leave the mount attached to your hitch, be sure to continually reapply ball grease and use a ball cover to protect it when not in use.
Can I use WD40 on hitch ball?
Expert Reply: WD40 is NOT the type of lubricant you would use for your 5th wheel trailer hitch. The problem is that a WD40 type of spray will end up attracting dirt and dust and debris and lead to more problems.
How do I keep my hitch from rusting?
You can keep rust from reoccurring by lubricating and protecting the ball with ball grease and covering it with a hitch ball cover. We recommend removing the ball mount from the hitch receiver and storing it until ready to use it.