Looking to see what people's opinions are on this. By stout I mean good add pack, TBN retention, shear resistance, etc. One of my first thoughts would be M1 T&SUV 5w30. I've also thought about using ML 5w20/30. I am putting the car through some pretty severe service lately and really want something that can handle the pressure. Not look for "this oil is best" answer..:) Just input!