In Reply to: Re: Oil tested after 10 years use. posted by Tim Daley(MI) on December 11, 2018 at 05:26:42:
What I got out of TOH's post was it is not so much the impurities in the oil that are cause for concern. Yes, your rope trick would likely filter a lot of impurities out. But it is the breakdown of the additives in the oil and even the chemical properties of the oil itself that makes the oil less effective.
I watch for a sale on 15W40 D rated Rotella and pick up a jug then. Second guessing the pros and trying to save a couple $ on "iffy" oil just seems penny wise and pound foolish to me.