Originally Posted by
Paul Barnard
What definition of lubricant are you using? WD-40 is a lubricant by every definition with which I am familiar. I have no idea how the myth that it is not got started.
It's mostly a solvent with a small amount of oil in it, and mostly it will evaporate, not leaving enough lubricant behind. Even the company that produces it must be aware of its failings as a bike lubricant, or they wouldn't have produced a different formulation specifically for bikes.
But hey, if you want to rely on it as the sole lubricant on your chain, knock yourself out.