Wednesday, March 02, 2005


WD40 is called WD40 because it was the 40th water displacement formula that the developers tried, and the first one to work.

1 comment:

Anonymous said...

This is true.

"WD-40's name comes straight out of the lab book used by the chemist who developed WD-40 back in 1953. The chemist, Norm Larsen, was attempting to concoct a formula to prevent corrosion — a task which is done by displacing water. Norm's persistence paid off when he perfected the formula on his 40th try."