Originally Posted By: Quest
if there's a drain plug, simply drain it from down below (with oil pan of course), and then @ the ATF dipstick (you'll need a narrower long neck funnel), simply top it up to approx. low range/level.
Start the engine and then check the fluid (when trannie cold) to see if the fluid gets up to the cold range. Top it up and then drive.
After a few day's time, drain again, and repeat the same process.
As to how many times you need to do a drain and fill, it's hard to say. I've done my wifey's 04 camry first 2 rounds with Castrol import ATF (ATF-3309 spec'ed) and then 4 more times with PCan DuraDrive ATF (full syn BTW).
It's been over 100k now and no more drain-n-fill afterwards (now @ 210k odo).
Q
Castrol Import ATF is good stuff. I acquired the Sonata in my sig about a month ago and it had an unknown ATF service history and a little sluggishness with the [censored]. After draining, I found the fluid to be rather dark. I did a couple of drain and fills using the Castrol Import and it shifts smooooooth now! Use with confidence.