What does the abbreviation "WD-40" mean? Almost no one knew…

Almost every family has the magic spray that solves "thousands" of problems, WD-40

It helps when the car lock is jammed, prevents rust, removes moisture, etc. Although many people use this popular spray, it turns out that most do not know what the abbreviation in its name means.

The product, which practically solves more than 2.000 problems, appeared for the first time in 1953 and its original purpose was to help protect the outer layer of the American "Atlas" rocket from rust.

Chemist Norm Larsen invented it and until 1958 it could only be found in America, while now it can be found in 187 countries around the world, Telegraph reports.

However, only recently have people begun to think about what his name actually means. So we are talking about a water remover, but what does "formula 40" mean? As it turned out, many had no idea what the acronym meant.

When he revealed to them what "WD-40" actually stood for, most were stunned. This acronym is called "water displacement, formula 40". So we're talking about a water remover, but what does “formula 40” mean?

If you still don't understand – the name refers to the fact that it took 40 tries to perfect the product.

The most common reaction on the net was disbelief, and some were even pleased that the company behind this product honestly admitted that it was only on its 40th attempt that it managed to make such a useful spray. /Telegraph/