2000 XJ Cherokee, sons DD: 403,000, yes 403,000 miles! (engine replaced at 398,786 miles, still ran with no knocks or smoke, valves recessed in head)
2000 TJ : 125,000 mi
2004 Dodge Cummins: 48,000 mi
2007 Commander : 39,000 mi
68 Mustang : 74,000 mi