Ok ... here's the list Udo gave me from Smart Center San Diego.
These are the approved engine oils (marked with an "X") - you'll notice there are several weights listed, the most recommended probably depends on your climate. Here in San Diego, I was told to use the Mobil-1 0W40 full synthetic.
Now I have to apologize for the image ... I didn't feel much like retyping this info and the font was way-small so you may need to save the image and zoom in on it to see it.