I'd rather have oil that holds up under high temp, speed, and pressure. ACEA A3 tests for that.

of the Mobil 1 series, only 15W50 EP and 0W40 meet A3.

I dont have data on the 0W30. It might be excellent for everyday use in colder and moderate climates where startup and cold are the primary sources of wear.
Grant

glenahan@fastmail.fm