You realize a car would still run even if you never changed the oil don't you? Probably for a good 100,000 miles. Meaning you don't need a multi year stash for Armageddon! This post is directed towards "Charles In Charge".
In the past they generally went about 35,000 - 70,000 mi with the original oil and filter before they died but with GIII being standard fill today 100,000 mi wouldn't surprise me.
