As mentioned by another commenter, many of the compounds in WD-40 “dry” out, either by evaporation or oxidation (turning to lacquer/sticky goo like what you find in the oven). WD-40 is meant for penetration and water displacement, not desirable for achieving long term lubrication.
An example of something better to use is 3-In-One Multipurpose or Motor Oil.
Another FYI is that oils break down grease, which is found in bearings (WD-40 aggressively so), so it’s not generally desirable to apply oil to bearings, unless it’s already having issues and you just need some additional life out of it.
An example of something better to use is 3-In-One Multipurpose or Motor Oil.
Another FYI is that oils break down grease, which is found in bearings (WD-40 aggressively so), so it’s not generally desirable to apply oil to bearings, unless it’s already having issues and you just need some additional life out of it.