What kinda lubes do you keep in your old oil cans?

[JJT]

Yeah, that is the recipe for rust buster I saw. I wonder if the acetone evaporates off over time. I guess if it is in a sealed container that would not happen. But one of those open topped oil cans might not be the best option I imagine.

That's my experience with acetone, once the can is open it evaporates pretty quickly. It's also something you don't want in contact with skin.