I've done 3 drain and fills total- one a week ago, one this past Saturday, and a 3rd just about an hour ago, hoping that I would notice any difference. You all keep telling me drain and fills "improves the performance" of your transmission but you don't say how, or what the problem you had was to begin with. I'll ask it again- what does ATF fluid have to do with the point at which the transmission shifts, or "gear hunting??" I bring that last one up because I could have been killed getting on the interstate this afternoon trying to merge- got on, traffic in the right hand lane in front of me was slow so I moved over to the next lane with a semi coming speeding up in it, hit the gas, and the transmission went "huh?" and WOULD NOT SELECT A LOWER GEAR FOR 2-3 SECONDS. And when it did, it was too low a gear and just revved the engine, FINALLY selected the next gear up and went, but by then the semi had to change lanes. I have no idea whether that had anything to do with the torque converter locking and then unlocking or whatever and frankly I don't care, that's a horrible way to design a transmission. Up until now, the transmission performance has just been a nuisance, but now I am downright angry. So, stopped by the dealer once again, grabbed some ATF fluid, and just did another change, just took it for a spin and NO CHANGE. It has been a COMPLETE waste of money, but more than I don't understand why everyone keeps insisting on ignoring both my question about how exactly fresh ATF is supposed to help my particular problem, as well as the others on this board with similar symptoms who were only able to solve their issues with a reprogramming?? I was willing tp try to learn to put up with it but what happened today makes me livid.