I'm doing all that this weekend in the comfort of my own driveway. My front wheels are f i l t h y, my tires are humming something fierce (gotta love Mud Terrains) and my oil is about 7,000 miles into its life. I used to change it every 10,000 miles but I know the last oil change it had (before I got it back) they did not use racecar oil. No worries though, Jeep 4.0's run forever.