They actually did make WD-39, you knowthey were trying to develop a new water dispersant, they tried WD-1, and that was crap, the next slight improvement was WD-2 and they carried on going until they got to WD-40, which seemed to do the trick.
(
HP hasn't been here in aaaaaages,
Fri 17 Oct 2003, 13:05,
archived)