A note on WD-40 mythology: It was developed as a water dispersant for NASA. "WD" stands for "Water Dispersant". It was the 40th formula tried, so it was named "WD-40". It was sprayed on rockets (the entire rocket) to disperse dew on night launches. It was delivered in 45 gallon drums and had to be cheap so the active ingredient in it is fish oil dissolved in a solvent dispersant. (Some fishermen spray it on lures as a scent attractant.) The volatile component works great as a solvent, but when that evaporates it leaves behind the fish oil. So you do get a bit of lubricant effect. But the fish oil is a lousey substitute for quality oil. It oxidizes and goes gummy, holding dirt and grit. I love the smell of WD-40 in the morning, but never use it as a lubricant for anything but squeaky gate hinges.