I don't know why anyone should be confused about what oil to use. It says right here on the back of this bottle of Mazola that it "can be used where an API SL oil is called for". I mean, what's the problem? It may not be the *best* oil to use in that situation. But it most certainly *can be* used.
The manufacturers tell you everything you need to know on the back of the bottle.
Edit: Arco, I'm only joking. Don't put corn oil in your Yaris. No matter how much moly the VOA might show.