Hello all. I don't post very often, but I find this board extremely informative. I own a 2002 Nissan Pathfinder with the 3.5 liter VQ engine. It has 28k miles on it with M1 5-30 for it's oil since 7k. Seems to like it just fine as the dealer does the changes for free for the first 12 changes and I take in the oil. I have never serviced the tranny and feel like I should either flush and fill or drain and fill. What are your opinions on what a should do and with what fluid. SUV sees no towing or what I would consider hard use. Any other Pathfinder owners out there? Thanks for your replies.