Back in 2002 I took a tour of this engine plant. It was really interesting and cool and clean enough to eat off the floor. Would love to go back again sometime.
Ive bought worn out,beat,89-93 12 valves with 300-500,000 miles on them and drove them 2500 miles east with full loads in the bed and getting no less than 16 mpg.Only one failure and it was a flat tire so it don't count.Guys in PA are like rabid dogs to get their hands on them.
I bought a new 03 Dually Dodge,last year before drive by wire(I think) put 100,000 miles on it and when I mentioned that I was going to sale,,the words barely left my mouth and it was sold during a race at the Strip.A fist fight almost broke out between two guys pitted next to each other.
So My vote is Hummin' Cummins for sure.
Cummins is the only option. The 5.9 liter six was designed from the get go for a life of 500k miles. This motor was introduced in 1984 and it's a proven design. 40% less moving parts inside than those off brand diesels. Have you ever seen a Powerjoke or a Duramax with 800k miles on them? There are even Cummins engines with over 1 million documented miles.
7.3 Navistar IDI for me. Don't care if it is in a Ford or cornbinder chassis. Rock solid engine although I'm not exactly in love with the E4OD behind it in my 89 E350 bus.
5.9 12V Cummins is also a great engine. Not only found in Dodge pickups of course. Lots of ag equipment used them as well as medium sized Ford trucks like the school bus chassis.
Yes. There was a boat hauler on Cape Cod who had 1,000,000 miles on a 1995 F-350 dually. My wife drove an F-550 rollback...when totalled, it had 930,000 miles. 400,000+ on a 7.3 PSD wrecker is COMMON!
Also note: International installed (and warrantied!) the T444E (what they called the 7.3) in medium-duty trucks, school buses, 10-wheelers, and even semi tractors!
I'm going against the grain here but I drive a 2009 Chevy Crew Cab Duramax for a tow vehicle. It is a nice truck and has never let me down. Fact is I prefer to drive it on long trips over my wife's 2009 Dodge Journey.