Diesel Engines

Diesel engines are most commonly recognized for their efficiency and reliability under heavy loads, making them the top choice for industries whose bread and butter are long-haul drives and high-torque applications. But are diesel engines as fuel-efficient as they claim to be? The short answer is, yes, but we want to explore why they are more fuel efficient than a gasoline engine. In this blog, we will take a closer look at the differences between a gasoline and diesel engine, the highest efficiency rating, and how that can be applied to real-world diesel engines.

What is the Maximum Fuel Efficiency of a Diesel Engine?

Today, diesel engines have an average fuel efficiency of 20 – 35% more efficient compared to older engines once they have been broken in. Fuel efficiency ratings have continued to improve due to re-engineering the engine design with fuel injection systems, improved management systems, and turbocharging capabilities. The push for increased fuel efficiency goes hand in hand with increased engine durability and meeting emission requirements. While diesel engines are often critiqued for their emissions, continued design improvements have made them far more environmentally friendly than they’ve been in the past.

The largest player in determining a vehicle’s fuel efficiency comes down to the fuel density. Factors that are considered in determining a vehicle’s fuel efficiency include:

• The vehicle’s weight
• Condition
• Age
• Stock or after-market modifications
• Driving habits
• Workload

Taking into account these factors, the largest contender for determining your engine’s fuel efficiency is fuel density. For context, fuel density is the amount of energy in a gallon or litre of fuel.

The fuel density of a diesel engine can range from 13 to 18% more than a gasoline engine. The chemical composition of diesel fuel makes it the denser of the two options, which weighs in its favour. As a rule of thumb, the denser the fuel, the better your mileage will be.

What is the Efficiency of a Diesel Engine in a Truck?

The diesel truck engines that rank with the highest fuel efficiency are Cummins, Powerstroke, and Duramax. Heavy and Medium-duty diesel engines will see an average of 14 MPG for 6.6 Duramax and 6.7 Cummins diesel engines. The 6.7 Powerstroke remanufactured diesel engine has the highest average for fuel efficiency with 15 MPG.

Are Diesel Engines more Fuel-Efficient than Gasoline Engines?

Let’s consider some of the differences between diesel and gasoline engines that play into fuel efficiency. Both use a four-stroke combustion cycle: intake, compression, power, and exhaust. However, the way they handle this cycle is where the magic happens.

• Intake and Compression: Diesel engines draw in air during the intake stroke only and compress it at a significantly higher ratio compared to gasoline engines.
• Ignition: Unlike gasoline engines, diesel engines do not require spark plugs. Rather, the fuel ignites through compression. For more information on diesel engine ignition, check out our previous blog post!
• Performance: Diesel engines excel in long-haul or highway driving due to their higher torque, which contributes to better fuel efficiency and faster accelerations. By comparison, gasoline engines perform better in start and stop traffic and without a load.

In general, diesel engines and their fuel density contribute to their higher rankings for fuel efficiency over gasoline engines. That being said, diesel engines have a higher price tag attached to their fuel efficiency due to their higher fuel costs, higher purchase prices, and their inefficiency for light loads.

How to Improve a Diesel Engine’s Fuel Efficiency

At DFC Diesel, we are committed to continuing to push industry standards to continue to improve your diesel engine experience and keep you moving while on the road. To bring the fuel efficiency of diesel engines to a whole new level, we are proud to carry Speed of Air Hyperformance Pistons. Save more on your engine when you opt for a Hyperformance Piston. When you upgrade your remanufactured engine with Hyperformance Pistons, you can see an increase of 15-25% in fuel efficiency. Some of the other benefits include:

• Reduced oil change intervals by 50%
• Reduced Regn Cycles and DEF Use
• Decreased NoX by 20-80%
• Reduced emissions
• Smoother running engine

Are you interested in learning more about how you can save with increased fuel efficiency for your diesel engine? Check out our Speed of Air engine series today and find out what you can save with our cost calculator!

Diesel engines are renowned for their power and efficiency, but like any mechanical system, they can experience issues over time. When your engine is running smoothly, it can be easy to push off regular maintenance. The longer your engine goes without service, the higher the risk of engine failure. An early warning sign that your engine needs some TLC is when you experience a blow-by. Every type of engine is capable of engine blow-by, but high-performance engines and diesel engines will exhibit signs early on. Curious about why your diesel engine is experiencing blow-by? Let’s dive into the basics and diagnosis, and how to significantly reduce engine blow-by.

Why do Diesel Engines have Blow-By? Causes and Symptoms

Engine blow-by is a result of a mixture of air-fuel or combustion gases leaking between the engine’s pistons and the cylinder wall, escaping into the crankcase. This mixture typically consists of water vapour, carbon dioxide, unburned fuel, and air. Blow-by occurs when the pressure in the combustion chamber becomes too great to be contained, forcing these gases into the crankcase. It’s essential to understand that some degree of blow-by is normal, but excessive blow-by can signal underlying issues. To minimize risks to your diesel engine, it is important to periodically check the state of your piston ring seal and monitor any changes. 

Diesel engines, in particular, are more prone to blow-by compared to gasoline engines due to their higher compression ratios, which create greater pressure in the combustion chamber.

Common Causes of Diesel Engine Blow-By

• Piston Rings: Piston rings are crucial for creating a seal between the piston and the cylinder wall. Over time, as these rings wear down, the gap between the crankcase and the cylinder wall can increase, leading to increased blow-by.
• Worn Cylinder Walls: While piston rings bear the brunt of wear, the cylinder walls can also deteriorate. As they wear down, they create a larger gap between the wall and the piston, allowing combustion gases to escape.
• Scratching and Scouring: The core of your engine is just as susceptible to damage as any other part. Damage can be caused by dirt and debris caught in the cylinder, carbon in the oil, and leaking fuel injectors. Once the cylinder walls, pistons, and rings are damaged, it can create pathways for combustion gases to leak.
• High Carbon Levels: Considered the silent killer of diesel engines, carbon build-up in the piston ring grooves or engines without electronic fuel injectors can increase blow-by.
• Manufacturing Defects: In some cases, engine manufacturing defects, particularly in piston-to-cylinder clearances, or poor quality control, can lead to blow-by issues.

Engine blow-by can arise from a variety of factors and can easily be mistaken for other symptoms. However, understanding the symptoms of engine blow-by can help you plan and take preventative measures to protect your diesel engine and its inner workings.

During What Stroke Does Blow-By Occur in a Diesel Engine?

 Most diesel engines have a 4-stroke combustion cycle, with piston strokes for intake, compression, power and exhaust. Engine blow-by occurs when the combustion chamber hits the maximum pressure during the compression and power strokes. This reaction can be impacted by the engine temperature and whether or not it is under a load. The hotter the engine, the more likely it is to experience engine blow-by. 

As a rule of thumb, the average engine blow-by is between 1.5 and 3 cfm (cubic feet per minute) when the engine is hot and cold respectively.

What Happens to a Diesel Engine Experiencing Blow-By?

Are you trying to identify why your diesel engine is acting up? To help you rule out other factors,  knowing the signs of an engine blow-by can save you time and money and minimize the risk of a misdiagnosis. Is your diesel engine experiencing any of the common symptoms of blow-by?

• White Smoke: A telltale sign of blow-by is white smoke billowing from the oil-fill tube or valve cover opening.
• Rough Idling and Misfiring: Diesel engines experiencing blow-by may exhibit rough idling and misfiring, indicating a loss of compression in the combustion chamber. An engine misfire occurs when combustion gases escape early from the chamber.
• Increased Oil Consumption: If your diesel engine is using more oil than usual, it could be a result of blow-by contaminating the crankcase oil. Monitor your oil levels to ensure your engine will not seize and the timing of your oil change intervals.
• Excessive Exhaust Smoke: Blow-by can contribute to excessive exhaust smoke, which is often thick and discoloured.
• Poor Engine Performance: Overall engine performance may suffer, with sluggish acceleration and reduced efficiency. If you are experiencing reduced engine power, it can be a result of lost compression.
• Increased Fuel Consumption: Decreased engine efficiency as a result of engine blow-by can result in higher fuel consumption rates and increased expenses. 
• Runaway engines: In extreme cases of engine blow-by, your diesel engine can be at risk of running away and speeding out of control. If you notice any of the following symptoms, booking a service appointment should be your top priority.

How Do You Stop Blow-By in a Diesel Engine?

While it is nearly impossible to fully stop blow-by from happening, there are preventative measures you can take to mitigate the risk and ensure your diesel engine is in top condition. 

• Optimal Ring Seal: Ensure that the piston rings create a tight seal between the cylinder wall and the piston. Regular maintenance is critical for medium to heavy-duty diesel engines that operate at high pressures and temperatures.
• Ventilation: Use vent tubes or oil separators to manage extreme crankcase pressure and separate oil from combustion gases. Keep an eye out for a stuck-open valve, such as black smoke, engine sludge, or surging.
• High-Quality Engine Oil: Use high-quality engine oil and remove stiction from piston rings to maintain a tight seal.
• Regular Maintenance: Adhere to a strict maintenance schedule, including oil changes, injector replacements, and cylinder inspections. This will ensure that the pistons are more frequently monitored for signs of carbon buildup or contamination.

Did you know that you can improve your diesel engine performance and minimize engine blow-by with specialized parts? Consider adding a Speed of Air Hyperformance Piston to your diesel engine. DFC Diesel is committed to providing our customers with the highest quality parts to bring your vehicle to the next level. Check out our 5.9 Cummins, 6.7 Cummins, 6.7 powerstroke engine and other top-performance rebuilt engines.

The Speed of Air Hyperformance Pistons features a dimpled effect on the piston head to allow for a more complete combustion process, with fewer carbon deposits forming in the oil and the cylinder walls. Our products have been tested for medium-duty applications for Cummins engine, Duramax engines and Powerstroke diesel engines. Experience increased performance and savings with reduced fuel consumption and fewer oil intervals. Learn more about our Speed of Air Hyperformance remanufactured diesel engine series and request a quote today!

What do you want to get out of your diesel engine? From serving as the workhorse that keeps you on the go for work to understanding the power of a diesel engine, your vehicle has more value to you than just acting as a piece of equipment. Just as you are looking for quality workmanship, we are committed to bringing you the best of the best when it comes to remanufactured engines. There are many hidden benefits to remanufactured engines that can be lost in translation, and we want to be clear and upfront about what makes us so passionate about providing quality services and products to our customers.

What makes remanufactured engines different from rebuilt engines?

First things first, a remanufactured engine and rebuilt engines should not be framed as the same type of engine. A rebuilt engine is one made up of reconditioned parts or new parts, but they do not go through the same quality and performance testing or inspections. Rather, rebuilt engines can use new or used parts at a cheaper price than a remanufactured engine.

Alternatively, a remanufactured engine is made to the original specifications and extra time and care is taken to disassemble, inspect, machine and reassemble the engine to ensure that every component is held to the highest standard of quality. In reality, it is on the same playing field as a new engine, but with a greater emphasis on sustainability.

Want to take a closer look at engine types? Check out our previous blog for a breakdown of rebuilt, remanufactured, and refurbished engines.

Why should I choose a remanufactured engine?

Choosing to upgrade your engine doesn’t always have to be a worst-case-scenario response to a failed engine. Whether you are starting to research the next steps or you want to upgrade your driving experience, a remanufactured engine has many unspoken benefits.

Reliability and Durability

Unlike the stigma surrounding used engines, remanufactured engines and their inspection process bring the machine shop to the next level. Every part and mechanism has been cleaned, undergone thorough inspection and certification, or has been replaced if there are any signs of wear and tear. The expression “good as new” is not an understatement, our remanufactured engines are built to last and withstand the lifespan of the parts. Not only that but they are tested and designed to give you reliable, consistent performance on the road.

Reduced Environmental Impact

The last few years have shown the impact that resource shortages can have on the auto industry and repairs. When you choose to work with an engine remanufacturer, every deliverable piece is already on hand in the warehouse or can be machined on-site, thereby reducing wait times and shipping costs and lowering our environmental impacts. We work with a variety of suppliers to continue to bring you the best parts and customized solutions for your engine. By keeping everything in-house, we are lowering the amount of energy spent on machining processes.

Customization

Our crate engines, designed in-house, can be made to order with customized solutions. After many years of testing and working in collaboration with Speed of Air Technologies, one of the top recommended customized solutions for 2023 is the addition of the Speed of Air Hyperformance Pistons. The Speed of Air line of remanufactured engines is the first in North America to feature this technology, bringing you reduced emissions, increased fuel efficiency and overall performance for your vehicle. You have the freedom to choose what you would like for aftermarket parts for engines.

Are remanufactured engines covered under warranty?

Warranty extends to any remanufactured unit and parts installed by DFC at the time that it left the property. In addition to limited warranties, we also offer Commercial Limited Warranty for 18 months or 48,000 km. Commercial warranties are available for specific models including emergency vehicles, snow removal equipment, government vehicles, farm equipment and more.

DFC builds refurbished engines to be reliable and long-lasting with aftermarket modifications, but the warranty does not cover every part of those added after purchase. Some of the exceptions include:

• Injectors
• Turbos
• Fuel pumps
• Accessories

The length of your warranty is dependent on the part of the unit that is malfunctioning. During your warranty period, you are covered by defects in the materials or the workmanship, and DFC will determine the right course of action for your case.

Interested in learning more about what you can do with your warranty? Learn more about DFC Diesel 2023 warranties for Canada, the US, and our KORE engine series.

DFC Diesel has proudly earned the title of Canada’s largest diesel remanufacturing facility, with standards of excellence unmet by others. Learn about the DFC Diesel difference, or contact us for an engine quote.

How well do you know your engine? As we enter into summer, it could be time for a change for your engine. Whether you’re looking for ways to improve your medium-duty diesel engine or a replacement for work, DFC Diesel offers a wide selection of crate engines and parts to fit your needs. This year, we are excited to provide our Speed of Air crate engine series featuring the Speed of Air Hyperformance pistons. This state-of-the-art technology can save you time and money by extending the life of your diesel engine and increasing your fuel efficiency. 

It’s time to debunk some myths surrounding diesel engines. Are you ready?

Diesel versus gasoline: Which engine has a longer lifespan?

At face value, the price tag of a diesel engine can be off putting, but the return on investment is higher than with a gasoline engine. With technological advancements and new designs, the average diesel engine will surpass 800,000 km (500,000 mi) compared to the average of 320,000 km (200,000 mi) for gasoline engines. Diesel engines are the powerhouse for work trucks, offering you greater load capacities and towing capacity compared to gasoline. 

There are three aspects of a diesel engine that lengthen its lifespan. First, the engine design improves its overall performance. They are designed to withstand a higher compression ratio and cylinder pressure. The powerful nature of the compression chambers and high heat requires high-quality internal parts, meaning that diesel engines house larger and sturdier bolts compatible with larger crankshafts and camshafts. Overall, they offer better engine lubrication to keep it functioning as it should. For more information on the benefits of your engine, check out our previous blog post to find out which engine design gets the best fuel mileage.

The second aspect is diesel fuel. The price difference at the pumps for diesel and gasoline fuel is reflected in the different chemical makeups. Gasoline fuel is an aromatic hydrocarbon, making it harsh and corrosive to your engine over time. Alternatively, diesel fuel is made from crude oil and allows your engine to burn the fuel slower than gasoline as a result of a smaller air-to-fuel ratio. The slower burn rate is reflected in slower cylinder wear and tear compared to a gasoline engine.

Finally, the last aspect of a diesel engine’s lifespan is the lower RPMs. The power of a diesel engine comes from the higher torque in the engine compared to gasoline. Through requiring less power, there is less wear and tear on each of the engine parts, namely the pistons, rings, cylinder walls, bearings and valves. Regardless of your relationship with your mechanic, fewer trips to the shop for maintenance make diesel engines a more attractive option.

At DFC Diesel, our remanufactured engines are designed to withstand tough working conditions that you may encounter. We partnered with Speed of Air Technologies to test the Hyperformance Pistons and see the results for ourselves. The dimpled effect of the pistons allows for less carbon build-up inside the combustion chamber, giving you more power and a longer lasting engine.

What makes a diesel engine more fuel efficient?

When measuring fuel efficiency, a good indicator of fuel savings is how your engine and vehicle performs under load. For hauling and towing, diesel engines can outperform gasoline engines while under load and last three times longer. The fuel efficiency of a diesel engine is a result of the longer strokes of the engine. There is more time for the piston to move away from the heat, lengthening its lifespan and building up the power in the engine. Due to the high heat in the chamber, diesel engines require high-quality parts, and pistons are part of the puzzle as they are designed to withstand countless heat cycles without crumbling. To reduce heat transfer, pistons are coated with a protective thermal barrier coating.

Why are maintenance and high-quality parts important for a diesel engine?

When you care for your engine, your engine will care for you by saving you money time and time again. At DFC Diesel, there is no doubt that we love diesel engines and the potential they hold. Built for reliability, durability and longevity, when you take time to properly care for your vehicle, you will save money every year. Regular maintenance and investing in quality parts and service will help save costs for replacement parts and oil changes. 

So why do we love our Speed of Air engine series? Each Hyperformance Piston in our crate engines is custom-made and follows a strict quality control procedure to ensure that our customers are receiving industry-standard safety and quality. This is the only piston in the world that pays for itself. Did you know you can save $20,000 to $60,000 when purchasing a Speed of Air engine? We care about providing our customers with the best, and we found in our testing period that our remanufactured engines show:

• Reduced engine maintenance
• Better fuel economy by 20%+ greater efficiency
• Smoother running engines
• Increased power
• Reduced operating costs
• Reduced oil change intervals by 50%

We offer 0% financing for up to 24 months on all SOA Series engines for our Canadian customers. If you are interested in learning more about our products, contact us today for a custom quote for your engine type and pre-order your DFC Diesel SOA series engine. Don’t forget to check out our Speed of Air calculator for your personalized fuel efficiency and maintenance savings.

With long hours on the go, hauling supplies and ensuring your gear is ready to go, ensuring your engine is ready for anything is our top priority. Diesel engines are powerhouses, but even with the best care they can start to break down over time. Speed of Air’s Hyperformance Piston is designed with you in mind to give your engine a longer-lasting life and save you money to invest back into your work.

The 3 most common pitfalls for fuel efficiency in diesel engines

Diesel engines are known for their consistency, and that can extend to common troubles that people encounter over time that can dramatically impact fuel efficiency. The three most common pitfalls include carbon deposits, glow plug replacements, and engine oil oxidation. 

Carbon deposits, or carbon build-up, take first place for being one of the most common causes of decreased fuel efficiency in diesel engines. Due to the high temperatures within the combustion chamber, carbon soot can form within the chamber and around the piston and injectors over time, preventing it from reaching the necessary temperature. 

In diesel engines, glow plugs are heating elements used to preheat the air in the combustion chamber before the engine starts, allowing the fuel to ignite faster for a smoother start. Along with improved cold weather starts, glow plugs can improve combustion efficiency, but they are designed with a limited lifespan due to corrosion and increased wear and tear from high temperatures. For more information on glow plugs, check out our previous blog post.

The last common pitfall is engine oil oxidation, which can cause the formation of deposits or sludge, increased oil degradation and decreased fuel efficiency. Like each of the other issues we have covered, this cannot be avoided but the use of engine oil additives can greatly improve the oil quality.

What makes the Hyperperformance Pistons more fuel efficient?

The unique design of Speed of Air’s Hyperformance Pistons was made with customers in mind by focusing on the challenge of carbon build-up within the chamber. In testing, flow bench techniques revealed the fuel wash areas on a typical diesel engine piston crown to determine where carbon is most likely to build up. The turbulators, or dimple effect, are optimized for medium-duty vehicles with Powerstroke, Duramax, and Cummins engine pistons.

So how does it work? 

The turbulent layers and surfaces allow for the flames within the chamber to burn closer to the cool metal surface of the combustion chamber wall, thereby making it difficult for carbon to form with each use. Each Hyperformance Piston is crafted with a thermal barrier and anti-friction coating on the crowns and skirts of the piston, which help to keep the heat in the combustion process while minimizing resistance. The result means more power within your engine and greater fuel efficiency.

At DFC Diesel, we are committed to offering high-quality products and services to ensure you are getting the best quality engine for your money. For two years, we have been independent testers of Speed of Air Technologies with over a dozen models found in Dodge, Ford, and Chevy trucks. As of 2023, we now offer a full range of Speed of Air remanufactured engines.

Under work conditions, our real-life testing of Speed of Air Hyperformance Pistons found that they offer: 

• 20% or more fuel consumption reductions based on your engine tuning
• Reduced engine maintenance
• Reduced emissions ranging from 20 – 80%
• Smoother running engines
• Reduced operating costs
• Increased power

What are the benefits for commercial diesel trucks?

Finding ways to keep your operating costs low can be a challenge, but it is possible. We have found that Speed of Air Hyperformance Pistons can help you to reduce your overall fuel expenses, while also staying with safety regulations. With after-gas modifications factored in, they can also help to stay within your emissions requirements across Canada and the United States.

How do I calculate my fuel savings?

On average, there are more than 20% for fuel savings with a Speed of Air remanufactured engine, but it can vary. Determining your fuel savings can depend on several factors including:

• Vehicle maintenance
• Engine application
• Altitude and temperature
• Idle time
• Driver habits

As a side note, when compared to gasoline engines, diesel engines operate with greater fuel efficiency at higher altitudes because they do not have a throttle.

Interested in what you could save? For our calculations, we compared the saves for 100,000 km based off oil change extensions of 50%

• Under normal usage, with oil changes every 10,000 km: $5450
• Under moderate usage, with oil changes every 7,500 km: $5700
• Under heavy usage, with oil changes every 5,000 km: $6200

Did you know that you can test your own fuel savings? Check out our fuel savings calculator!

We currently carry Speed of Air remanufactured engines for DFC Long Blocks, Street Series, Tow/Haul Series, and Tow / Haul HD Series engines at DFC Diesel. For up to 24 months, we offer 0% financing on all SOA engines for our Canadian customers. 
Interested in learning more about Speed of Air Technologies? Contact us today for a custom quote for your engine type and pre-order your DFC Diesel SOA Series with Hyperformance Pistons!

Your truck can be your livelihood, but pushing your engine with long hours and heavy hauls can have severe impacts on your engine life. In 1952, the average new gas vehicle could go 500 miles (804 km) between oil changes. Thanks to modern technology and new gas engines, using products like full synthetic oil, an oil change interval can now go for as long as 25,000 miles or 40,000 km before wear and tear are noticeable. Frequent oil changes can be costly for your vehicle as you lose time on mechanical repairs and spend hundreds of dollars on oil.

Oil change intervals are an essential aspect of vehicle maintenance. Whether it’s the synthetic oil change interval, or a more specific full synthetic oil change interval, or even the synthetic blend oil change interval, it’s crucial to know what’s best for your vehicle. For instance, Ford’s recommended oil change intervals provide a great guideline for many Powerstroke engine owners. For oil recommendations for your specific engine, check out our previous blog post.

Your medium duty diesel engine holds more potential with new product designs and optimized crate engines. We have run a series of tests on engine performance with Speed of Air Hyperformance Pistons, and we have found that they are reducing oil change intervals on average by 50% or more!

Factors impacting oil change intervals

No one knows your engine and how your truck drives better than you, and every vehicle’s oil life can vary. Based on the industry standard, the average oil drain interval is around 5,000 miles (10,000 km), but individual factors can change your intervals. 

Engine design, age and condition

Within your engine, the combustion efficiency can improve your overall engine life, but carbon deposits are a major player for contaminants. When hydrocarbons are not fully burned during the combustion process, they can escape the combustion chamber and make their way into other parts of your engine. Your engine design and condition can depend on the sealing efficiency of the pistons rings, regulated temperature control, and emissions. Every engine is designed with an expected total operating hours and mileage, but good filtration and sealing can help to prolong your engine.

Driving patterns and conditions

What kind of road and temperature conditions do you work within? If you are constantly driving in extreme temperatures on both sides of the spectrum, it can impact your engine oil. Continued cold starting can result in oil thickening, which can impair lubrication for bearings and cylinders. If you drive regularly on steep roads, with high loads and many stop-and-go instances, it can lower your fuel efficiency as your engine oil is working harder. Dusty roads or areas with high humidity can also increase airborne contaminants getting in your engine oil.

Oil properties

Your oil properties are related to the oil quality and formula performance. When it comes to contaminants, some that we look for in your engine oil include:

• Sludge and soot
• Water and coolant ingression
• Fuel dilution

If you are looking for a specific recommendation for your engine based on your line of work and driving conditions, our team at DFC Diesel is here to help to keep your engine operating as it should. 

Are Speed of Air Hyperformance Pistons compatible with my engine?

We are proud to be in collaboration with Speed of Air Technologies in creating game-changing crate engines. For over two years, we have been testing and refining our crate engines with a variety of Powerstroke, Cummins and Duramax designs. Speed of Air’s Hyperformance Pistons are compatible with a wide range of engine applications and fuel types such as diesel, natural gas, and gasoline engines.

Our crate engine applications are specialized for medium-duty work trucks and are fit for your unique working conditions and industry. The pistons are designed with turbulators, or a dimple effect, to minimize resistance during the combustion process, allowing for a more complete process and less carbon buildup forming within the engine.

What does this mean for your engine? Reducing the carbon buildup in your engine prolongs the surface life and allows for extended periods between oil change services. Our extensive testing found that your oil change intervals are extended by over 50%. Interested in seeing the benefit for your engine? You can find personalized fuel efficiency and maintenance savings with our Speed of Air calculator. 

Why work with DFC Diesel?

Since 2010, our team at DFC Diesel has been serving customers across North America by building the highest quality engines with the most comprehensive warranty in the industry. As Canada’s largest diesel remanufacturing facility, we have adopted rigorous standards to create quality products that we take pride in. When you work with a remanufacturer, you can trust that every engine part is made to the same or greater standards as your original parts, while also measuring up to OEM tolerances, durability, and quality.
Our Speed of Air series crate engines are made with Hyperformance Pistons that will keep your engine running more reliably and efficiently so that you can spend more time on the road doing what you love, and less time in the shop. Interested in learning more about our engines? Check out our Speed of Air series engines and find your match. For more information, contact us for a quote today and preorder your new engine!