Drained from the top you dont have to worry about them leaking on the shelf if you do not get all of the oil out of the can
Why would you drain the oil, and then, umm, ...... not drain the oil?
I don't know. I'm a bottom drainer. After letting drain for maybe even a day or so, I swish the inside out a time or two with a little gasoline. Then allow it to drain again for a for a day or so onto some paper towel. All drainging is done with it sitting angled toward one of the holes. It's going to be sitting on a shelf for years, what's a couple days. Just set it aside. Then twist a little paper towel and do a good job of wiping it out at the holes. If I find a drip or two on the shelf some time later, so what, just whipe it up. There will never be any more then a drip or so.
I just like them empty from the bottom. Just my opinion.
