My next baby is a 1989 D150, 318, 2.53 gear, with 240,000 hard miles. At least 100K of that is towing miles. My friends nicknamed it the "Race Truck" because I towed at 80mph with it and beat most of them driving cars back from Carlisle and the Nats repeatedly. I think it's lived so long because the 318 never had enough horsepower to hurt itself.

No tranny cooler, just a brake box and a hitch. Knock on wood, she hasn't given me much trouble, just a few a/c compressors, one starter and a cat. converter, I threw away.

Bought it with 50K miles on it and will probably be my 10 year olds first vehicle.