Be careful about WD 40. It's sold as a water-displacing fluid, not a lubricant
Wrong as can be.
description on can says "lubricates".
Fourth use mentioned is water displacing.
The inventor told me personally it is a lubricant that also displaces moisture. It was designed to lubricate very high voltage switches located in a high humidity environment.
I use it for guns and many other things.
I also use CLP Break-Free and Ballistol.