Originally Posted by langjie
nope, but I hear you really don't need to change the fluid
The NAH uses the Toyota HSD and a technical group of Prius owners have done lab analysis on ATF wear and tear. From that analysis we determined that the Toyota Type WS ATF does need to be refreshed at 60,000 mile intervals.
The First 60,000 miles show a rapid build up of metallic load in the ATF which was less dramatic in the second 60,000 mile interval. The improvement is due to the gear teeth "lapping in" during the initial period. I will do another analysis on my 2004 Prius at 180,000 miles in a couple of months and have more data.
Given my experience, if I were dealing with a new Toyota-based hybrid, I would do the first refresh at 30,000 miles and then every 60,000 miles thereafter. Of couse some of you could repeat our data collection on your vehicles and determine the appropriate intervals for yourselves.