i have come to realize that the two best motors ever built are the early FORD model naturally aspirated 7.3 diesel and early ford 300. better known has the hot -water six. i see why ford stop making them and the reason why is. you dont have to work on them. my work truck 7.3 has 370,000 miles and has never had anything but a oil and air filter change,and glow plugs. i have had dozens of different hands driving it at work. the young punk kid type that dont care about the bosses junk. they cant even tear the ole 7.3 up..........just sayin