While M1 5W30 is a fine oil , I like the fact that Valvoline Advanced 5W30 has a large amount of moly (approx. 2.5X to 3X more than M1 ) but then I started thinking : “Just how much moly is enough over a 4K mile OCI” ? Is it possible that although M1 shows a lower amount of moly in a VOA versus Valvoline Advanced (or QSUD) perhaps M1 uses a different type of moly or some other additives that protect critical engine parts from wear that may not show up in a VOA ?