looking at a 2000 Cherokee, a friend’s Father bought it new, never been off road other than dirt road to his house, has 350,457 miles. serviced every 3000mi, all factory service done, never wrecked, looks good, I’m just curious about the motor hanging in. If properly maintained about how long to replace/rebuild engine. Like I said body, interior, under carriage in mint shape

 

The 4.0 I6 is a tank and can go the long haul, and it sounds like it's been pampered, but even for an XJ that's a LOT of miles.