I truely believe that oils are such a personal preference and if you ask 10 people , you'll get 10 different answers.
But with that said , I've been running Mobil Delvac 1 5w40 for years in all our cars . I use it in both the engine and power steering
I still service my sons car who lives 4 hours away and if I service it at 5000 or 10000 there's no worries because the oil is that good ,, just as long as he keeps it topped off.