It's stored in plasticIf the container is galvanized than I'd pitch the fuel..... Additives in diesel fuel will work on the galvanized lining of a container and send deposits into the fuel that both the filters and our high pressure injection systems don't care for.....
Also old stale fuel will grow bugs..... those that are naturally in the fuel... ... .
I think I would use it in an older engine with old style injectors but not our trucks...