[INDYMAC]

As Dirty Harry would say, "do you feel lucky?".

Although WS ATF may be an excellent fluid, I don't believe that the high amount of wear metals floating around in there from break-in are a good thing for your tranny. I plan to flush it at 30K miles. Then I will consider leaving it in for a longer service life.

The only thing a "lifetime service fluid" guarantees to me is a shorter life. If Toyota would guarantee the tranny for as long as you own the vehicle, then I would believe the hype.