Best Diesel Pickup for Longevity and Durability?

Advice Needed
1

Deciding between a RAM 2500 6.7L Cummins and a Ford F250 Powerstroke (late model, used/certified around $50k). I’ll be using it as a daily driver in Western UP MI (harsh winters) and for towing track toys, a bass boat, and taking long road trips to Florida with family. I want a truck that will last as long as possible (aiming for 300-400k miles).

I’m leaning towards the RAM because of the Cummins I6 engine’s reputation, but I’m concerned about rust on the panels/bed/chassis over time. The Ford’s aluminum body is appealing for rust resistance, but I’m not as familiar with the long-term reliability of the Powerstroke. Any advice?

2

Both are excellent trucks, but they all have their issues. Maintenance is key regardless of the brand.

3

If rust is a major concern, go for the Ford (2017+ alumiduty). The aluminum body helps a lot in the rust belt, and the 6.7 Powerstroke with the 6R140 transmission is a proven, reliable combo.

4

Zen said:
If rust is a major concern, go for the Ford (2017+ alumiduty). The aluminum body helps a lot in the rust belt, and the 6.7 Powerstroke with the 6R140 transmission is a proven, reliable combo.

I’m a Cummins fan, but I’d agree with this for your situation.

5

The Ford is overall the better package if you’re looking for a daily driver in a rust-prone area. The RAM Cummins engine is fantastic, but the rest of the truck often doesn’t hold up as well in terms of rust and durability.

6

If you’re meticulous about undercoating and washing the RAM regularly, it could work for you. Otherwise, the Ford’s aluminum body might be a better choice for longevity in the rust belt. Just make sure to run quality diesel and use fuel additives to keep the Ford’s CP4 fuel pump happy.

7

Rust can be mitigated with proper care—get annual underbody protection or use products like Fluid Film. Both trucks are great, but the Cummins engine is easier to work on and has a reputation for longevity.

8

Here’s a quick comparison:

  • Engine Durability: Cummins I6 is top-notch, especially if tuned and deleted.
  • Body: Ford’s aluminum body resists rust better.
  • Transmission: The RAM’s Aisin (available in 1-ton models) is excellent; the Ford’s 10-speed is also very capable.
  • Ride Quality: RAM has a smoother ride thanks to coil springs, but it sacrifices payload capacity.

Either will last a long time if maintained well.

9

The 6.7 Powerstroke is a fantastic engine. With regular maintenance on the fuel system and CCV box, it will last a long time. The transmission is also robust and should get you to 200k miles before needing significant work.

10

If longevity is your goal, Cummins is king, but RAM’s rust issues are real. If you go the RAM route, be prepared to invest in regular undercoating and maintenance. Ford offers a more well-rounded package with fewer rust concerns.

11

Ford 6.7 Powerstroke all the way. Less rust, more reliable body, and plenty of power.

12

Buy once, cry once might not be possible with modern trucks. They’re all great until they break, and when they do, repairs can be expensive.