How the conversation turned to permeation and absorption still boggles the mind. But yeah, it has a shelf life.
because it's Moparts silly rabbit!
Well, to recap, some "say" oil has a shelf life with little to back it up, some others "say" it has a shelf life with questionable reasoning, some "believe" the questionable reasoning outright, and some ask questions that boggles some people's minds. Make's sense to me.