Originally Posted by
HillRider
Years ago I read that 3 in 1 was a vegetable based oil and would "dry out" and form a varnish-like film over time, sort of like Linseed Oil. That wasn't true then and isn't now. It's just a light petroleum oil and will work fine.
Yea. My can 3-in-One is from the late 80s (I use it for wheel building) and it has never formed any kind of varnish.