How long will a 5.9 Cummins last?
So, the general consensus seems that a Cummins engine’s life expectancy is from 300k-400k miles, but if you follow the correct steps, you could, and should have some sort of control over the life span of your engine, and we don’t think crossing your fingers will really suffice.
What is the most miles on a 5.9 Cummins?
Of the highest is a 1996 Dodge Ram with a 5.9-liter Cummins diesel engine that has 3,016,789 miles. Following that is another two 5.9-liter Cummins engines that also have over 3,000,000 miles on them.
Are 5.9 Cummins reliable?
Outside of the fuel system, the 5.9 24v is a very reliable engine. The engine internals such as the pistons, rod, and crankshaft will last a lifetime and can hold up beyond 500,000 miles.
How many miles do Cummins last?
The longevity of a cummins depends on preventive maintenance. The more you take care of it the longer it will last. They hold power well and if monitored properly will last longer than you will. Average mileage is between 17-22 depending on configuration and how you drive.
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.
Is 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.
What is considered high mileage on a Cummins diesel?
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.
What is the best year Dodge Cummins to buy?
- 1989-1993 Dodge Ram 2500 and 3500 – Timeless Diesel. …
- 2003-2008 Dodge Ram 2500 and 3500 Heavy Duty – Best Used Diesel Value. …
- 2010-2013 Ram 2500 Heavy Duty – Most Capable Diesel. …
- 1999-2003 Super Duty – Best Budget Diesel. …
- 2008-2010 Super Duty – Best Diesel to Modify.
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.
What are the problems with the 5.9 Cummins?
5.9L Cummins Fuel Pump, Injection Pump, & Injector Failures
One reason that the earlier pumps are more susceptible to premature failure is they absorb a tremendous amount of heat from the engine block. Another issue with the pump location is that the fuel pump must draw fuel a significant distance from the fuel tank.
Is it bad to idle a 5.9 Cummins?
Idling for longer than 15 minutes should be avoided. Do not operate at full speed or load until the coolant reaches normal operating range. Do not operate above low idle until oil pressure is indicated.
How much HP can a 5.9 Cummins handle?
The 5.9L inline-six mill’s factory rotating assembly from ’89 to ’02 is capable of handling 800 hp (1,400 to 1,600 lb-ft of torque) without breaking a sweat, and is often pushed into four-digit territory before aftermarket rods become a consideration.
Should I buy a diesel with 200k miles?
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.
What is the best Cummins Engine?
The most reliable diesel engine ever made was the 5.9L Cummins 12-Valve 6BT. This unit has million-mile durability, and it arrived factory with a 230 horsepower, 440 lb-ft of torque, and an inline P7100 injection pump. Diesel enthusiasts from the era of the 6BT could boost horsepower to over 500 horsepower with ease.
Is deleting a 6.7 Cummins worth it?
Should I Delete My 6.7L Cummins? To put it bluntly, no, you should not remove the emissions equipment from any diesel pickup. … Removing emissions equipment also voids the vehicle’s factory warranty. And before you say it, there is no way to keep a dealer from knowing that emissions equipment was removed.