In another 100 miles, my Titan hits the 100k mark. I already have a new set of spark plugs, belt and transmission hoses waiting for a nice day to install.

My biggest concern is the transmission. I had Nissan flush the tranny at 60k. As I understand it, the fluid show now only be drained and refilled. So with 40,000 miles of spirited driving since the last change, is it ok to service it again? I don't want to buy a new tranny because the old one crapped out after a fluid change.

I also had the cooling system flushed at 60k, and at 78k it was flushed again when I changed the radiator out.

What else needs to be done?