Several years ago, Dollar General threw some Peak oil on a BOGO sale, bringing it to well under $2/quart, tranny oil included. I bought some and noticed that after about a year, their containers did the same. While I don't have a huge stash, at least like a few members here, I now store all my oil in those big rectangular totes that WM sells. If it then leaks, it's contained in the tote.