Oil used to be stored in cans but they went to plastic because its cheaper. So if it was clean with no rust and air tight with a cap sure you could have a favorite pour container. Every so often I buy 1qt and replace my top off-er. I like the fact I can see the marks for 1/2 qt through the plastic quarts.
They do seem to get "soft" after a while...hmmmm...what in plastic would show up in a UOA...