What Does WD-40 Really Mean? The Surprising Story Behind the Famous Name

For many people, WD-40 is simply a household product used to loosen rusty bolts or silence squeaky hinges. It has earned a place in garages, workshops, and toolboxes around the world. However, few people realize that the famous spray was originally created for a very different purpose, and its name reflects an interesting chapter in engineering history.continue reading …