and defense engineering.
Then came the breakthrough.
The breakthrough behind the product’s name reveals exactly how persistence turned repeated failures into a household name.
The key to the familiar name is hidden in the number 40—and the story of how that number was earned is surprisingly straightforward.
The Meaning Behind the Name
The fortieth attempt succeeded.
And that success is permanently embedded in the product’s name.
WD stands for Water Displacement.
40 refers to the 40th formula.
There was no branding trick or clever marketing spin—just a straightforward description of
