5 Common 6.7 Cummins Problems
- Clogged DPF.
- Turbo failure.
- Head gasket.
- Fuel dilution.
- EGR cooler.
The 5 Longest-Lasting Used Trucks
- Honda Ridgeline. The Honda Ridgeline comes in at first place in the category of trucks most likely to last 200,000 miles.
- Toyota Tacoma. The Toyota Tacoma is another midsize truck that can provide reliability and longevity.
- Toyota Tundra.
- Chevrolet Silverado 1500.
- Ford F-150.
What is the Most Reliable Diesel Truck?
- Ford 1999 – 2003 Super Duty with 7.3-liter Powerstroke.
- Ford 2008 – 2010 F-250 and F-350 with 6.4-liter Powerstroke.
- Chevy 2001 – 2004 Silverado 2500 HD with LB7 Duramax.
- Dodge 2003 – 2007 2500 with 5.9-liter Cummins.
- Dodge 1991 ½ – 1993 with 5.9-liter 12-Valve Cummins.
Dodge trucks manufactured between 1999 and 2003 are especially prone to transmission problems. These trucks used the Dodge 45RFE automatic transmission, which had significant reliability issues.
If you're looking for a full-sized, heavy-duty truck that can do it all, look no further than the 2020 Ram 2500. The number one reason to buy a truck in this class is for the capabilities. The Ram 2500 has towing and hauling capacities that are heard to beat. It's an impressive off-road performer.
Best 3/4 Ton Trucks
- 2019 Chevrolet Silverado 2500HD. Chevrolet has just celebrated its 100th year of building pickups.
- 2019 Chevrolet Silverado 3500HD.
- 2019 Ford Super Duty F-250.
- 2019 Ford Super Duty F-350.
- 2019 GMC Sierra 2500HD.
- 2019 GMC Sierra 3500HD.
- 2018 Nissan Titan XD.
- 2018 Ram 2500.
TrueCar ranks the following vehicles as the best heavy duty trucks to buy:
- Ford Super Duty F-350.
- Chevrolet Silverado 2500HD.
- Ram 2500.
- GMC Sierra 3500HD.
- Nissan Titan XD.
Between 350,000 and 500,000 miles
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.
When serviced properly, the engine should last 500,000 to a million miles between teardowns. Peripherals like the turbocharger, fuel injectors and the fuel pump, however, can wear out or fail much earlier. A well maintained fuel system can keep injectors going for 250,000 miles or more.
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.
6.7L Cummins Maintenance Schedule
| Service Procedure | Interval(s) |
|---|
| Replace engine air filter | 30,000 miles/24 months |
| Change engine oil & oil filter | 2007.5 - 2012 | 7,500 miles/6 months |
| 2013 - 2019 | 15,000 miles/6 months/500 hours |
| Replace crankcase ventilation (CCV) filter | 2007.5 - 2018 | 67,500 miles/54 months |
A Dodge Ram 2500 pickup truck equipped with a Cummins diesel engine averages about 17.5 miles per gallon in general driving, and almost 20 MPG on the highway, as of 2015. The 6.7-liter, six-cylinder turbocharged engine from Cummins is the only diesel engine available on the Ram 2500.
If your yellow dipstick handle is on the right side of your engine (the driver's side), you're likely looking at a vehicle with an Aisin transmission. If your dipstick is just to the left of your engine, you're most likely dealing with the 68RFE.
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.
Today, Cummins' business in China has grown to nearly $4 billion, making the company one of the leading engine manufacturers in the country.
Yes, the Ram 1500 is an excellent truck. Its potent engine lineup includes V6, V8, and diesel options, and a new high-performance TRX model debuts for 2021. The Ram delivers the smoothest ride in the class, and it has the nicest interior.
The 3.6L Pentastar® V6 engine is perfect for the everyday driver and can be found standard on most 2021 Ram 1500 models. Sporting 305 horsepower and 269 lb. This best-in-class standard V6 horsepower, 4x4 fuel economy, and 4x4 driving range pickup truck won't disappoint. With a maximum towing capacity of 7,730 lbs.
The Most Reliable Used Pickup Trucks in Consumer Reports Rankings
- Toyota Tundra. Toyota's full-sizer is the most reliable truck on the market.
- Honda Ridgeline. Honda's reliability shines through in the Ridgeline.
- Nissan Frontier.
- Toyota Tacoma.
- Ford F-350.
- Chevrolet Avalanche.
- Ford F-250.
- Ram 1500.
As a basic 2-wheel-drive regular-cab Tradesman model, the 2018 Ram 1500 has a Manufacturer's Suggested Retail Price (MSRP) of $28,490 including a $1,395 destination fee.
Recall no. Chrysler (FCA US LLC) is recalling certain 2018-2019 RAM 1500 trucks. The rear differential may have been insufficiently filled, possibly resulting in its failure. If the rear axle assembly fails, it can cause a loss of drive or the rear wheels may lock up.
How Reliable Is the 2017 Ram 1500? The Ram 1500 has an above average predicted reliability rating of 3.5 out of five from J.D. Power.
The top 5.7-liter Hemi V-8 churns out 395 hp and 410 lb-ft of torque and comes rated at 15/22 mpg with rear-wheel drive and 15/21 mpg with four-wheel drive (13/19 mpg with the six-speed automatic). Besides the sole six-speed automatic, all engines come standard with an eight-speed automatic.
8-speed automatic transmission
6.7L Pros & ConsLarger displacement and longer stroke than the 5.9L means more low-end torque and better ability to spool a larger turbo. 350hp to 385hp stock (depending on model year and transmission) 650 lb-ft to 900 lb-ft of torque stock (depending on model year and transmission)
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.
To me the Holy Grail is an early-1998 Cummins 4x4 12-valve. The rear Quad Cab doors only started opening in 1998, but halfway through the model hear they started with the computerized 24-valve biz. That's the best body configuration of the most reliable truck ever built and it's got power potential as good as any.
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.
Best Used Diesel Trucks
- Nissan Titan XD.
- GMC Sierra 2500.
- Chevrolet Silverado 2500.
- Ram 3500.
- Ford F-350.
- Ram 2500.
- Ram 1500.
- Ford F-250.
As a rule of thumb – the lower the mileage, the better. For gas engines, look for a truck with under 100,000 miles. For diesel, under 200,000 would be just as good. You could go with higher mileage – just pay more attention to the truck's overall condition in that case.
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.
