Today, I dropped the pan on the transmission. The magnets didn't look too bad. I've never done this before, but Google showed me lots of pictures of pan magnets looking like sea urchins, so I guess this is pretty good.
I thought the pan had lots of bolts, until I saw the inside of the transmission.
New filter.
I replaced the 3 quarts that come out when you pull the plug with new Toyota WS ATF, which I think they ought to shorten to "World Transmission Fluid." For brevity, you know.