Hey, I think my personal thread a few threads on the main page down will answer some of your questions. I've got an 06 and just got trans, front/rear diff, and transfer case fluids flushed and filled today. I didnt think my tranny had any problems and I THOUGHT it was butter smooth before. WOW does it make a difference. My oil wasnt even that dirty, it was actually looking like new but damn can I feel the difference. The gears roll through like a warm knife slicing through butter!