Did you ever wonder what the WD in WD-40 stands for? The name was lifted right out of chemist Norm Larsen's laboratory notebook. Way back in 1953, he was trying to concoct an anti-corrosion formula, which worked on the basic principle of displacing water. On his 40th try, Larsen finally got it right. Hence the name WD-40. It literally means Water Displacer, 40th try.
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