Do You Know the Seven Responsibilities of a Motor Oil? Ed Newman | Nov 20, 2015 8:26:43 AM There are so many things we take for granted and give very little thought to. Air is one of them. We seldom feel a need to understand what happens when we breathe, how oxygen in the atmosphere ends up in our bloodstream so as to nourish the cells of our bodies. Gravity is something else we give little thought to, even though it has a daily impact on our lives. (Be careful where your toes are when you drop something heavy.) Something else we usually take for granted is motor oil. If we've been properly trained we know we have to change it once in a while, but beyond that how many people really know why? What does motor oil really do anyway? Here are seven tasks that motor ...