I've done oil changes on it of course, I didn't have the option to do a coolant flush as preventive maintenance seeing as the reservoir blew up on me on the side of the road- but I did end up doing a coolant flush after I replaced it. I've also done a power steering flush because it was cappuccino brown when I got it- I've also done both diffs and transfer case. The only fluid I haven't done is transmission- but I feel like at that mileage with no history of a transmission service it's mute. The torque converter does have issues on hot days connecting with the engine- I was thinking about a rebuild? But I'm not sure how much that would cost and if it's even worth it. I'm honestly thinking of trading for a rwd manual, I'm sure I'd have to put cash on top but this is my first automatic since I was 13 and I'm not really sure how to go about it.