- Check the coolant overflow reservoir/degas bottle for white residue (indicative of a blown head gasket).
- Check for worn ball joints, excessive rust, and leaks in the fuel, coolant, or transmission fluid.
- If you can’t understand the code yourself, don’t accept any explanation for why the Check Engine Light (CEL) is on.
- At idle and when in gear, listen for any form of lope or miss (could be the sign of an injector issue). Consider it a worst-case scenario and walk away if you hear any disturbing noises.
- After selecting a gear, pay attention to how long it takes for an automatic transmission to engage.
What should I look for when buying a diesel truck?
This is self-explanatory. You need to know what to look for when purchasing a used diesel truck. According to CarsDirect, while searching for a used diesel truck, you should check the truck’s exhaust system to make sure it’s in good working order. You should also inspect the oil and the radiator of the vehicle.
You’ll want to keep an eye out for corrosion as well. According to Driving Line, while minor surface rust is fine, you should avoid purchasing an old diesel truck with structural components that are completely beyond repair. Driving Line recommends inspecting the inside of the truck’s chassis as well as the exterior for rust.
And what if you’re not sure about your inspection skills? You should seek the assistance of a mechanic, according to Edmunds. A professional check, according to Edmunds, will give you a decent idea of what might be wrong with the used diesel truck you’re looking at. It will also assist you in becoming more acquainted with the automobile.
What is high mileage for a diesel truck?
When it comes to mileage, according to Prosource Diesel, diesel vehicles frequently receive better mileage than gas trucks since their engines are more durable. As a result, according to Prosource Diesel, it’s not uncommon to find a used diesel truck with more than 200,000 kilometers on the odometer. There’s a good chance you’ll stumble across a used diesel vehicle with 300,000 miles on the clock.
What constitutes excessive mileage in the case of specific diesel engines? According to Prosource Diesel, a secondhand diesel truck with a Cummins or Duramax engine with more than 350,000 kilometers is considered excessive mileage. For a Powerstroke diesel engine, anything above 350,000 miles is considered high mileage.
What is the most reliable used diesel truck?
Diesel fans are well aware that pre-emissions diesel trucks were more reliable in general. One of them is the LB7 Duramax. There are no EGR, DPF, or SCR emissions control systems on this vehicle. This truck was rather light for an HD pickup, allowing it to achieve up to 22 mpg when not towing or hauling. It also had the option of a heavy-duty Allison transmission to help in towing.
The 6.6L Duramax V8 with Bosch common-rail injection was used in the 2500 and 3500 HD models in this model year range, and it was unaffected by later emission systems. These trucks are recognized for being dependable workhorses that can produce up to 450 horsepower when properly programmed.
- For lots of towing capability, choose between an Allison six-speed automatic or a ZF-6 six-speed manual transmission.
Is buying a diesel truck a good investment?
When two similarly equipped trucks, one gasoline-powered and the other diesel-powered, have similar mileage, the diesel almost always has a greater resale value. Diesels are known for their great dependability and lifespan, making them an excellent choice for used car buyers.
Is a diesel truck a good daily driver?
Gasoline engines have more horsepower and less torque than diesel engines, resulting in more immediate power and acceleration off the line. Diesel engines, on the other hand, produce greater torque (or force) than horsepower. While diesel engines take longer to start, they have more torque, which implies more force behind the power. This is why diesel trucks and cars are more capable than gasoline-powered vehicles.
Diesel engines, on the other hand, are capable of more than only hauling huge loads. Because diesel engines use compression ignition, they have larger compression ratios than gasoline engines and, as a result, transport more energy via the fuel. Diesel engines are up to 20% more fuel efficient than gasoline engines, according to Universal Technical Institute. Diesel engines have a tendency to be noisy “According to Car & Driver, “their biggest benefits can be seen on the highway,” when power production can be maximized.
However, because of the diesel’s spontaneous combustion, the engine requires less mechanical input. Diesel engines are more reliable than gasoline engines because there are less things that may go wrong with them. They also have a longer life expectancy and require less maintenance. Although this results in a greater purchase price than a gas-powered vehicle, diesel engines are often less expensive in the long term.
Diesel engines deliver power, efficiency, and lifespan to their owners. While these engines have a reputation for being clumsy, “Commuters and everyday drivers can benefit from heavy-duty, diesel-powered automobiles.
Is 100 000 miles alot for a diesel truck?
Even when used heavily for towing and carrying, diesel vehicles like the Powerstroke, Cummins, and Duramax generally survive far past 100,000 miles. As a result, diesel trucks with 200,000 or even 300,000 miles have a high resale value on the secondhand truck market.
Does it cost more to insure a diesel truck?
Insurance prices are determined by the vehicle’s value, regardless of the type of vehicle purchased. As a result, insuring a higher-priced vehicle will cost more than insuring a lower-priced vehicle. Because diesel trucks are more expensive to manufacture than ordinary gas trucks, diesel truck insurance is typically 10-15% more than gas truck insurance.
Which diesel engine lasts longest?
Because diesel pickup trucks have more durable engines that can sustain greater compression ratios, they often obtain better economy than gas trucks. Powerstroke, Cummins, and Duramax diesel vehicles often last well beyond 100,000 miles, even when used frequently for towing and hauling. As a result, diesel pickups with 200,000 or even 300,000 kilometers sometimes attract high resale values on the secondhand truck market. Drivers shopping for a used diesel pickup understand that a truck’s life isn’t over just because it has a lot of miles on it.
With modern trucks surviving longer than ever before, it’s not uncommon to come across gas trucks with 200,000-mile lifespans. Diesel trucks, on the other hand, can exceed that limit. Diesel pickup trucks may easily last 500,000 miles or more. It isn’t simply their engines that are more durable. Because diesel engines are heavier than gas engines, diesel vehicle hulls are designed and constructed to be more durable.
Not all high-mileage diesel trucks are created equal, much like other cars. For example, a diesel truck that has been used extensively for towing and transporting large loads for 100,000 miles may require serious repairs, whereas a diesel pickup that has been rarely used and has 200,000 miles on the clock may still have years of trouble-free life ahead of it. However, it’s also crucial to know that the life expectancy of a diesel vehicle is determined by a variety of other elements outside the odometer reading, such as:
For example, a 200,000-mile diesel pickup with only one or two owners and strong maintenance records is likely to be a better investment than a 100,000-mile vehicle with four owners and few records.
The general condition and appearance of the truck are also significant. A truck with a well-kept exterior and interior is likely to have had its mechanical components well-kept as well.
Duramax is a brand of diesel engine found in GMC and Chevy vehicles manufactured by General Motors. What constitutes excessive mileage for these engines is a matter of debate. Some owners consider 100,000 miles to be excessive mileage for Chevy diesel trucks, while others believe that anything less than 350,000 should be considered high mileage. A poorly maintained engine might swiftly deteriorate before reaching 100,000 miles, whereas a well-kept Duramax pickup truck should last 400,000 to 500,000 miles.
Cummins engines can be found in Dodge diesel trucks and Ram diesel trucks. Cummins diesel engines, like the Duramax, are designed to last a long time. On a Cummins diesel, 350,000 to 500,000 kilometers is normally considered high mileage. Of course, this is dependent on how well the engine is maintained.
Although maintaining the engine is crucial, some diesel pickup drivers believe it is even more important to keep the truck alive around the engine because the truck itself is less likely to last more than 500,000 miles, even if the diesel engine is well-maintained.
The Powerstroke engine, like the Duramax and Cummins engines, is found in Ford trucks and can last up to 500,000 kilometers. However, similar with the Duramax and Cummins engines, a Powerstroke engine with 350,000 to 500,000 miles on the clock is considered high mileage. The key to gaining the most miles is to keep the truck and engine in good shape. Ford vehicles are the most popular truck brand in the United States, and they’re regarded for their overall dependability.
Purchasing a diesel pickup truck with at least 250,000 kilometers could be a good deal. Diesel pickups are more expensive than their gasoline counterparts when new, so buying one used might save you a lot of money. When purchasing a used diesel truck, keep the following in mind:
Oil leaks are common in high-mileage engines, but they aren’t always cause for concern. It’s not uncommon to have small leaks around gaskets and seals. A little oil seepage around the front and rear main seals, for example, isn’t all that concerning and is even expected. Oil that is more densely coated around a seal or gasket, on the other hand, may raise suspicion. It depends on how much oil is smeared across the surface. To put it another way, while having no oil leak is definitely better, a tiny oil leak on a high-mileage diesel engine shouldn’t necessarily be a deal breaker.
When purchasing an older diesel truck with a mechanical injection system, it’s a good idea to start a diesel fuel additive routine. Long-term running without supplemental lubrication of one of these older diesel engines can result in early injection pump failure. A fuel additive, on the other hand, can improve modern diesel engines. Additives can help any diesel engine, whether it’s a high-mileage or not, get better gas mileage.
Distinct trucks and engines, like any other vehicle, have different challenges. Buying an engine model that appears to have the fewest difficulties may be irrelevant if the truck it’s in has issues. It’s also crucial to look into the individual truck’s troubles, in addition to the engine’s concerns. Maintenance records can be extremely useful in this situation.
For example, the water pump on a particular truck may fail every 100,000 miles or so. Even if a truck has 300,000 miles on it, if the water pump hasn’t been updated in 150,000 miles, you could be looking at expensive repairs.
On a high-mileage diesel truck, it’s never too late to switch to synthetic engine and gear oil. The following are some of the advantages of synthetic oil:
Heat, repetitive mechanical pressures, and chemical breakdown from fuel dilution are the major enemies of oil stability. All of these forces are more prone to higher-mileage engines. Synthetic oil can help a high-mileage diesel engine last longer and run more efficiently.
Synthetic oils, in the end, minimize friction better than traditional lubricants. Friction can increase as diesel parts wear out in high-mileage engines. More friction equals more heat, which accelerates the deterioration of oil and diesel truck parts.
To summarize, there is no single number that defines what constitutes high mileage for a diesel pickup truck; however, anything beyond 500,000 is commonly considered excessive mileage. However, remember that there are many more factors to consider when purchasing a used diesel pickup than mileage. A well-maintained, high-mileage Powerstroke, Cummins, or Duramax diesel pickup truck is almost always a better option than a poorly-maintained, heavily-used diesel pickup truck with lower mileage.
How many miles per gallon does a 6.6 Duramax diesel get?
The 2500 level of the 2021 Sierra HD series contains a diesel engine that produces 445 horsepower and 910 pound-feet of torque. On the freeway, this Duramax 6.6-liter V-8 scores 17 to 19 mpg.
Which is better Duramax or Cummins?
The Cummins engine is currently a 6.7-liter inline-six, whilst the Duramax is a 6.6-liter V8. The Duramax is the most powerful engine in terms of horsepower, but the Cummins is the most powerful in terms of torque, with values up to 1,000 ft-lbs depending on the truck.