In October 2019 I bought a 6qt box of Havoline 5w-20 conventional and I have yet to use it. Its a cardboard box with a plastic bag so I kept it in a very safe place for storage. Fast forward to 12/29/20 the plastic bag gave way and leaked out all the oil making a huge mess. If you plan on storing box oil just be careful. I personally will never buy box oil ever again.