Yes, the search is a pain. And I don't ever remember a post answering that question, anyway. I'd go with the dealer juice, too. Probably worth the premium over dexron3. ATF is just full of detergents, since the tight tolerances of the valve body are very sensitive to gum. These detergents get used up over time. Change the fluid, clean the filter, and count on many, many more happy miles. Resist any recommendation to flush it. Too risky.

Not responsible for advice not taken...