I would not oil it if the container is air tight it should not deteriorate. I have no desire to stash guns or food somewhere. But what would be ideal is a place to stash yourself . A remote under ground bunker or at least a big hole in the ground. Chances are if I need to bug out I will have a rifle in hand and plenty of ammo and if the SHTF like that I will kill others and take their stuff also if I need to. If I do not get shot in the process.