Why bother. Just point to the oil filler cap. It says it right there. Just make sure they don't replace the cap with one without the recommendation.

I was at an owner orientation session my dealership had a couple of weeks ago in the evening. I asked the service manager about oil changes. His response was that Toyota states 5W20 or 0W20 right on the cap, so that's what they use. Now that's what I wanted to hear. I go for my first oil change this afternoon.