Since I began stashing in earnest, I was thing of how long it's going to take me to go thru all my oil, even though I do 3k oci's which for me is pretty much once a month. Well, since I am only a junior member of the oil stash club (probably only about 20-30 gallons), I was thinking about something... You guys that have several, several gallons of oil, what are you going to do when you get new cars in the future w/ newer API specs? I mean, what about when they are on say...SN, SO, SP? What if the new oils make our current stashes look like liquid poop? What if your new car's warrenty REQUIRES the new spec oil, as it surely will.