Folks, I searched in this forum but there isnt a definitive answer on recommended brand & grade of engine oil to be used for f26, m40i.
My previous oil change was 5w30 and right now, i have a recommendation to use 5w40 from an Indy garage. I am sure they will drain the oil completely before filling the new oil; but i really want to get your expert opinion on recommended brand & grade.
