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Is a 5.9 or 6.7 Cummins better?

The 5.9 Cummins offers a fixed geometry turbo, which differs from the 6.7 Cummins variable geometry. … To sum up, the more simplistic 5.9 fixed geometry turbo means that while it tends to be more reliable, the more advanced 6.7 variable geometry turbo gives better performance.

Subsequently, How many miles can a Cummins last?

Like the Duramax, Cummins diesel engines can be expected to last a long time. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel.

then, How many MPG does a 5.9 Cummins get?

We own five Dodge 4×4 pickups with the 5.9L Cummins, and we are thrilled with all the trucks. All five trucks we own average 29 MPG highway, and 24 MPG in town. Cummins 5.9L has the fuel economy, speed, and the power to pull.

Thereof Which Dodge Cummins Engine is best? Cummins 5.0L V8 TURBO

The Cummins 5.0L V8 TurboDiesel is the best Cummins engine for smaller trucks and drivers who don’t need as much pulling power. It utilizes a compacted graphite iron block for a durable construction that is still light enough for smaller applications.

How many miles will a Cummins 5.9 last?

The Cummins brand is extremely reliable and prides itself on long-lasting engines. The 5.9-liter engine can expect to churn out 300,000 to 400,000 miles.


20 Related Questions Answers Found

Is 100k high mileage for a diesel?

According to Prosource Diesel, anything over 350,000-miles is considered high mileage for a used diesel pickup with a Cummins or Duramax engine under its hood. Anything over 350,000-miles is also regarded as high mileage for a Powerstroke diesel engine.

What is considered high mileage for a diesel van?

Today’s modern vans are engineered to last – and 100,000 miles showing on the clock is commonplace. There’s even stories of Transits reaching 200,000 and beyond – but if you are considering spending your hard-earned cash purchasing a ‘High Miler’, it can be a case of ‘buyer beware’.

What’s the most reliable diesel engine?

What is the Most Reliable Diesel Engine Ever? The most reliable diesel engine ever made was the 5.9L Cummins 12-Valve 6BT. The 5.9L 12-Valve has million-mile durability. It came factory with a 230hp, 440lb/ft of torque and an inline P7100 injection pump.

How can I make my 5.9 Cummins more fuel efficient?

To restore your truck’s fuel mileage, you must change the “peak efficiency” of the motor to match your driving/towing RPM speed. Increase the low-end torque rise of your motor significantly improves fuel economy because the engine now does more work with less effort.

Is 24v better than 12v Cummins?

When it comes to serious power and performance the 12v 5.9 Cummins takes the win. These engines are known to hold up better at extreme power levels when compared to the 24v engines. P7100 injection pumps on the 6BT are easier to mod and support the extra power.

How many MPG does a 2021 Dodge Ram 2500 diesel get?

Performance and Fuel Economy

The EPA doesn’t evaluate fuel economy for heavy-duty trucks but when our RealMPG team tested a Ram 2500HD Power Wagon with 4WD and the Crew Cab body style, it returned 10.2/15.3 mpg city/highway.

Which is better Hemi or Cummins?

Overall, the gas HEMI engine provides the best gas horsepower among 250/2500 pickups — and more payload capacity than the Cummins — but the turbo diesel outperforms it with mountains of torque and more maximum towing capacity.

Why are Cummins engines so good?

A Cummins diesel engine is recognized around the world as a superior truck engine not only because a Cummins engine will have the horsepower and torque a work truck needs to tow a hefty load, but these engines are also noted for unmatched durability.

How many hours will a Cummins 6.7 last?

The engines usually last 20,000 hrs, or more with decent maintenance. A cummins with 5000 hrs is nothing, and in equipment they can do a lot of idling.

Why is the 5.9 Cummins reliable?

If you don’t consider the fuel system, the 5.9 Cummins is a very reliable engine. The internal parts like the pistons, rods, and crank will last for a zillion miles even with some abuse. The turbos are very responsive and will give a long service life, but they don’t have a tremendous horsepower potential.

Whats better Duramax or Cummins?

More horsepower means faster acceleration whether you’re towing or not. The current Duramax 6.6L L5P diesel wins this category with 445 horsepower. The current 6.7L 24V Ram Cummins diesel engines produce 400 horsepower. Historically, horsepower has swayed slightly in favor of the Duramax versus the Cummins line.

Is 200k miles alot for a diesel truck?

As a result of this, Prosource Diesel reports, it’s not all that uncommon to come across a used diesel truck with upwards of 200,000-miles on its odometer. … According to Prosource Diesel, anything over 350,000-miles is considered high mileage for a used diesel pickup with a Cummins or Duramax engine under its hood.

Is it OK to buy a diesel truck with high mileage?

Generally speaking, diesel trucks are sold with higher mileage than the typical used vehicle. It is not uncommon to see a used diesel truck for sale with over 200,000 miles on it. Granted, diesel engines typically have better reliability than a gasoline equivalent, but high mileage remains a concern.

Do diesels need to be driven hard?

Driving an old diesel hard may well have shifted any soot build up but to clear any build up in the DPF a regeneration is required, it simply cannot be blown out even though some maintain it can, its an urban myth. Regens take place when required and are controlled by the ECU, you cannot force one yourself.

Are Short Trips bad for diesel engines?

Short trips do not let the diesel engine get warmed up well enough to remove deposits and keep carbon from accumulating and being burnt off. That’s all really. You need at least 15-20 minutes of loaded running to get it to temp and say about 1 hour straight a month of highway driving minimum to keep it all happy.

Is it OK to drive a diesel short distances?

Diesel Rule 3: Don’t buy diesels for low mileage or inner city life. Also known as “diesel car city driving”, you want to avoid doing this. … Driving at low speeds and short distances clogs up your Diesel Particulate Filter (DPF) quickly.

Should I buy a diesel truck as a daily driver?

This is why diesel trucks and cars tend to have greater capabilities than gas-powered cars. … Diesel engines provide owners with power, fuel-efficiency, and longevity. While these engines carry a stereotype of “heavy-duty,” diesel-powered vehicles are also suitable for commuters and everyday drivers.

What’s the worst Ford diesel motor?

Ford Super Duty 6.0L (2003-2007)

Introduced mid-2003, the Ford 6.0L turbo is by far the worst modern diesel engine. It’s so bad, in fact, that Navistar (Powerstroke’s parent company) and Ford had a legal battle over it. The list of issues ranges from head gasket problems to catastrophic fuel system failures.

What is the most reliable diesel truck 2021?

Best Diesel Trucks

  • 2021 Ford F-150. Overview. …
  • 2022 Ram 1500. Overview. …
  • 2021 Chevrolet Silverado 1500. Overview. …
  • 2021 Jeep Gladiator. Overview. …
  • 2022 Ford Super Duty F-350. Overview. …
  • 2021 GMC Sierra 1500. Overview. …
  • 2021 Chevrolet Colorado. Overview. …
  • 2022 Ram 2500. Overview.

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