I have an 05 4.4i w/ 51k since new. I have always changed the oil, brake fluid and coolant flush at the appropriate times. I was wondering about the other fluids in the car and when/if they should be changed, such as:

- power steering fluid
- tranny fluid (I know its sealed but do we change it?)

Also, are we supposed to change any other fluids such as rear end or center diff? I plan on keeping this X5 for a while.

Thanks to all who answer.