There should be a forum just for WD40. Yes WD means Water Displacement, but it also cleans and (slightly) lubricates. Some say it leaves things slightly sticky. But that has not really been my experience; I find it's effective as a cleaner, penetrates well while not being unpleasant indoors. You do have to follow up with a real lubricant. If you just leave the WD40 residue behind, yes it is just a bit sticky, and its lubricating properties are very short lived.