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Maintenance costs for EcoDiesel over the gas Hemi


Jan 2, 2014
Has anyone done the math of the maintenance costs of owning the diesel over the hemi model? I want the diesel, but if the oil changes and I've heard fuel filter changes are really expensive it might now be worth that to me.


Jan 21, 2014
I have done the numbers, but I wouldn't expect a drastic difference. The motor is small, doesn't require a ton of oil. The only extra costs considered are the fuel filters as they are the life of a diesel. Most people don't change the fuel filters on a gas truck as much as a diesel.


Active Member
Jul 23, 2015
Truck Year
Here a bit of info, i found about Diesel verses Gas engines. Interesting read... It may be a bit exaggerated and base on Cummins Diesel....

Why Buy A Diesel? Performance

Torque: The ISB typically has over 60% more torque capability than the gas alternative (Max 660 lb.-ft). The ISC typically has over 120% greater torque capability than the gas alternative (Max 1050 lb.-ft).

Horsepower at Altitude: Turbocharged Diesels are rated at 10,000 ft with no loss of power. Typical gas engines will lose 3% of power every 1000 ft in altitude. (E.g. a 290 hp has would deliver only about 200hp at 10,000ft, while a C8.3 300hp engine would still deliver 300hp)

Fuel Economy: Diesel engines typically get 50-100% better fuel mileage than gasoline engines due to lower engine speeds, high compression ratio, advanced combustion technology, and the higher energy content of diesel fuel vs. gasoline.

Exhaust Brake Capability: Exhaust brakes provide improved braking capability, improved safety, and lower maintenance costs. Not used with gas engines due to much lower compression ratios.


Advanced diesel technology makes a diesel engine last up to 3 times as long as comparable gas engines due to:

• Lower piston speeds
• Larger bearing surfaces
• Piston Cooling
• Gear driven camshaft instead of chain driven • Internal Engine Oil Cooler
• Up to 50% Fewer External Parts

ISB is rated up to 52,000 lbs. GVW with a projected life-to-overhaul of 400,000 miles. ISC is rated up to 80,000 lbs. GVW with a projected life-to-overhaul of 500,000 miles.

Diesel...a powerful advantage over gasoline

First, consider the two key factors for judging engine performance...horsepower and torque.

Horsepower determines how fast your vehicle can go, and how well it handles the hills. Torque, measured in pound-feet (lb-ft), determines how quickly your vehicle accelerates from a stop or passes another vehicle. Put simply, torque is what gets you going, and horsepower is what keeps you going...down the road.

Compared to a gasoline engine, a Cummins diesel engine will deliver peak torque quicker, for superior pulling power... especially when towing. And that’s just one reason why a Cummins diesel engine is the power of choice in hardworking vehicles.

At 230 horsepower, a gasoline engine delivers only 390 lb.-ft of torque. But a Cummins B5.9 engine at 230 horsepower really flexes its muscle with 605 lb-ft of torque. And for even greater power, Cummins C8.3 diesel engines are available up to 350 horsepower with 1050 lb.-ft of torque. That’s the kind of strength you can really feel working for you.

Easier Maintenance

Cummins engines have a simpler, more efficient design than gasoline engines. They have fewer parts, which means less to go wrong. In fact, Cummins diesels require fewer oil changes and maintenance intervals than gasoline engines. Over the life of your diesel, your maintenance frequency will be 40-50% less than gasoline engines. In short, you’ll spend more time on the road, and less time in the shop.

Fuel Economy

Diesel engines have always been designed and built to deliver the most work from the least amount of fuel. That means when a Cummins diesel engine is working its hardest, you’re saving the most...up to 75% in fuel costs. Bottom line...they are by far more efficient than gasoline engines.

The higher compression ratio and advanced combustion technology of Cummins diesel engines extract more energy from every drop of diesel fuel. So with every mile you drive, you’re saving on fuel. And that means you’ll save money while spending less time at the pump.


Greater durability allows diesel manufacturers to offer longer warranties. The typical diesel engine warranty is 5 years and at least 100,000 miles, while the typical gas engine warranty is 3 years / 36,000 miles.

Diesel engines provide longer maintenance intervals. Typical recommendation is 15,000 miles vs. 3 months or 3000 miles for gasoline engines.

Cummins offers the QuickServe program as well. QuickServe is a program that offers you an entire service network geared to providing rapid response with the highest quality service expertise in the industry. Our mobile QuickServe team:
• Provides you with a toll-free 800 number to call, staffed 24 hours a day, seven days a week.
• Calls you back with a comprehensive service plan within 30 minutes.

• Dispatches a mobile QuickServe truck and technician within four hours to your site. • Provides a complete diagnosis within one hour of arrival.
• Completes most repairs within 24 hours.

Stan Laurel

Active Member
Aug 3, 2015
Truck Year
Exhaust Brake Capability: Exhaust brakes provide improved braking capability, improved safety, and lower maintenance costs. Not used with gas engines due to much lower compression ratios
Yeah well, don't count on any perceptible exhaust braking capability on an EcoDiesel.