I’m glad I have never had metal cans leak, but then again with the Tung Oil coming in a metal can, it does get transferred into the Glas bottles as soon as I get it home, never knew there was a shelf life on metal cans, or was it the content John?
Robert with the price of the oil I’m not slopping the oil all over and onto the floor and shavings, not cool, but yes some are careless and messy and then things can/will happen.
Of course not using all kinds of different finishes makes for less possible problems.