Best oil is a loaded question. However since really getting into this forum, Ive wondered if any of you have a brand/grade of oil that is NO LONGER MADE, that ranked high on your list. Every automaker has had that engine that was low maintenance, and just wouldn't stop. Was there an oil from yesterday that "just wouldn't stop" or had a very good blend for its time? My personal one was Kendall when made in Bradford. Loved the formula, and used it for years and years.