In message ,
writes

I've never heard of 3-in-1. Is it auto mechanics stuff or like liquid
wrench? I might go and try a bottle. I keep losing the small pocket
sized WD-40 mini-spray can.

http://www.3inone.com/original/
Normally, one can will serve a household for a lifetime. However, it
suffers from the same problem as your can of WD40, ie you can never find
it when you need it - so you need to buy another. As a result, you end
up with several cans of various vintages, distributed all over the house
and garage.




--
Ian