Well I'm a DJ so i travel a lot doing shows. I have traveled to a lot of amusement parks and texas state park camping grounds with my two boys. Mostly highway miles and crawling over curbs when necessary. As far as major changes. Ive always used Royal purple full synthetic oil. At 380950 while cruising at 80 on the Houston toll road my radiator hose went. Steam every where as i pulled of the toll to a service station. Had AAA tow it to my mechanic who said it ruined the engine. Which sucks because i was trying to see how many miles i could get and all it took was a busted hose, so check your radiator hose people as a maintenance item. At least that hose lasted over 300000 miles. Starter was replaced under warranty at 68000. Fuel pump at 350000. Changed the power steering rack at 398000. I had one cv axel changed at 400 thousand and i just had the other cv axle changed 414000, and i just blew out the front diff, and had that replaced just yesterday. (3-15-2016) Thanks to
https://forum.ih8mud.com/members/arcteryx.4381/ for the differential. I am amazed that the drivetrain lasted over 400000 miles. Every one who rides in it cannot believe it is a 1999 with over 400000 miles on it. They comment on the smooth solid ride, and i agree. Going for another 400000, next trip north to Sandusky ohio, cedar point theme park.