Quote:
Originally Posted by olddog
I'm not sure how many years it was buried, but what was buried was vegetation and not refined oil. What we use is refined oil that has all types of things done to it. Molecules are cracked and chains of molecules are attached or polymerized. Motor oil is a concoction of additives that are mostly hydrocarbons that came from crude oil and went through some chemical altering process. There are additives that prevent rust, others increase shear load resistance, and on and on.
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OK, that is technically correct. As far as I've ever seen, oil doesn't have a shelf life. So if you check the "Use by" date (if you can find it) it's probably out somewhere to 20,857.