If your key won’t go into a door lock, don’t reach for the WD-40. All you need is a graphite pencil to solve the problem. Over time, dust and dirt make their way into the door lock cylinder, causing ...

Q: I have a 1994 GMC pickup. When it gets cold it is very hard to unlock the driver door. A couple of times I have had to unlock the passenger door to get in. We tried spraying WD-40, but that hasn’t ...

This is a warning. My son is a locksmith and encounters people who have used a lubricant on their locks to try to make them turn more smoothly. I would imagine that this is not good anywhere you live, ...