Never? What do we mean by never? Not even in an emergency?

Putting the emergency question aside and going on the assumption that it’s just time for my next oil change, and that my preferred oil is unavailable and my 4Runner is just going to have to hold its nose until the following oil change: in choosing what I would settle for, I would insist on the proper viscosity of 0W20 or 5W20, per the manual. If neither were available I would put off the oil change until the proper viscosity was available. Then I’d concern myself with the ILSAC or API service grade. The manual specifies ILSAC GF-6a, but I’d use GF-5 or GF-4 as well if it were the only thing available. As far as the brand is concerned, I’m not that fussed. I’m not racing. I’m changing my oil frequently. Amsoil, Redline, and the other glamor oils are unnecessary.

I would eschew all other options.