WD-40

Claimed to be an ad from 1964, with as much double entendre as the copywriter could think of.

This is, however, debunked on this website; among other things:-

"The date attached to the claim does not match up with WD-40's actual timeline, though: The product was made commercially available in San Diego in 1958, eight years before this purported ad supposedly promoted the product's first release... Nonetheless the company still appreciates the humor: after someone shared the photo in question on WD-40's Facebook page, the company simply replied: "AWESOME!!!"