who is to say? i had my auto tranny go out and i only used honda fluid and it was always changed on time by the dealer. never abused it. so i have a used honda tranny installed, that i had the fluid changed by an import place and they didnt use honda fluid but they did add a conditioner to the tranny fluid. ive had no problems with the tranny at all.

anymore now honda doesnt make its own parts and fluids, they have someone else do it. so the dextron is probably ok and what honda is using itself right now? u would most likely have to add a conditioner. not sure what it is since i didnt personally change the fluid. incidently, it was less then a month after i had the original tranny's fluid changed by the dealer that the tranny just went out. the screens get clogged up with torque converter and clutch pack material that just comes off over time and that is what killed mine. u cant clean the screens separately they r internal. mine shifted fine no problems at all, no flashing green light on the dash, then out it went on the way home from work. i was in 2nd and i had reverse gear..

the power steering fluid ive never messed with..