Having been through a 7th Civic and 3.8L Windstar, I don't believe in long life ATF anymore. Our HL has 25k miles and I plan to do a drain and refill this weekend. Will go to the dealer to get some Toyota WS ATF. There is a 20% off parts discount going on at the dealer near me. That should bring the price down to $6.xx/qt + tax
I don't seem to find the fill plug. Looking at the pdf found in the sticky, I only see a drain plug.
http://sumbiz03.home.comcast.net/~sumbiz03/TransaxleComponents.pdf
UPDATE: Couldn't find the fill plug so I refilled from the dipstick tube.
Prior draining the ATF, I drove around the block until the car warmed up. Also shifted through every gear. I was able to drained out ~4.5qt of ATF. That's almost half the total capacity (9.5qt for my V6 AWD) according to the manual.
With 25k miles on the odometer, I can see the ATF color is not as pink as the new ATF. Next time I will do the drain/refill every 20k instead of 25k to see if there's any difference.