I know the manual say's 120,000 Miles. But do you think it's necessary to flush the Tranny before that, or would that be a waste of my time?
I was planning on flushing it at 100,000 but after reading the manual, I was thinking of waiting...

 

Most do change long before 120K. The 06 and later models with the maintenance minder will call for a change when necessary (it was indicated at around 85K miles on my wife's 07 for instance). You may want to do a search, there's quite a bit written on the subject here.

 

automatic? i'd do it every 30k
manual ever 30k as well
excessive? nahhhhhh

 

totally.

The first time you do it, make sure you do it 3x3. Then, drain/fill once every 30k.

 

I had the manual transmission fluid changed for the first time a few weeks ago-mileage was 101K

 

my dealer recommended at 75,000k

 

This seems to be about the consensus considering what I've read and heard (except of course for the "change the oil and filter every 3K miles" crowd). Although it took a while for me to get on board (I'm old enough to remember when you actually did have to change your oil and filter every 3K mlies), I realize that drivetrain engineering and lubricant technology have both progressed enough to allow for considerably extended fluid replacement intervals. Anyone can change any hydraulic fluid as often as they like, but.... perhaps we shouldn't confuse "feel good" maintenance with what's actually required to allow for maximum service life of an item or system using said fluid.

 

I'm doing mine at 80k and is an 05. 5 years is long enough for me , and its only $50 or so. Cant hurt, my fluid isnt exactly crystal clear either.