Dd15 fuel economy. The DD15 was designed for heavy haul.
Dd15 fuel economy 4 Faulty Fuel InjectorNote: If all cylinders have not updated within 3 minutes, run the engine to 1200 RPM for 1 minute and return to idle. Gear train, injectors, clutter on the exterior of the engine, etc. Big Bear Engine Company specializes in many makes and models of engines including our Detroit Diesel DD15 Remanufactured engine assemblies. 7 Rail Pressure Bleed Off 5. Numbers will vary, there are too many factors. Remove clamps from injectors and install a tip protector onto the injector nozzle. Aug 8, 2020 · There is a lot of competition between the DD13 and DD15 engines and for a good reason. Check for carbon buildup on the throttle body, which restricts airflow, causing rough running. The DD15's powerband supports maximum fuel economy over distance, while the DD13 focuses on quick response and city-friendly efficiency. Detroit DD15 Power 400 - 505 hp Torque 1550 - 1750 lb-ft Our engineers continue to refine and improve many features of the Detroit DD15 to reach a new level of performance and efficiency. Jul 2, 2021 · Buying a new truck and considering the Gen 5 DD15 505 1850 vs DD16 500 1850. DD15 engines often face excessive fuel consumption and injector fouling related to combustion inefficiency. Mar 10, 2023 · What are the usual DD15 DPF delete problems? Learn more about these common issues with the DPF delete that you need to know. Some people say the dd13 is more reliable since the dd15 has some sort of minor issues that the 13 doesn't get. To counter these issues our DEF, EGR and DPF delete tuning for Detroit Diesel DD15 engines removes these components safely and efficiently for optimal engine performance and reliability. Jan 30, 2025 · DD15 Engine Specs The DD15 engine is a technological marvel, providing incredible performance, torque And A higher fuel economy. Fuel System: The system in a diesel engine that delivers diesel fuel from the tank to the engine. 7 mpg. Lift the clamp and injector from its seat in the cylinder head using J-47391 injector removal tool. Both of these products are very impressive Fuel Eficient by Design Detroit seamlessly integrates its engines, transmissions, and axles for improved fuel eficiency. 0 mpg long haul This article details how ECM tuning unlocks superior diesel engine performance—improving power, fuel economy, and throttle response—making it a great real-world complement to your post on ECM tuning benefits. Fuel economy management can be accomplished with the aid of Detroit Diesel's Spec Manager® computer program. Nov 21, 2023 · Or, 2018 dd15, in a cascadia, same mileage, 18sp. Boots & Hanks Truck Parts stocks dyno-tested DD15 engines, reman long blocks, and hard-to-find components-compression tested, warrantied, and available for fast nationwide shipping. At least the 550 hp 60's we have will. 11 Fuel Filter Life DD15 Fuel System Technician's Guide - DDC-SVC-MAN-0037 Generated on 10-13-2008 Posted in DD15 Engine Fuel System, Diagnostic Tests We can all find some information online about the fuel efficiency of the new cascadia, volvos, pete 579, t60 next gen, and mack anthem. The best source for new and used detroit dd15 Engines for sale. Jul 17, 2018 · Detroit DD13 vs. May 4, 2024 · 2007-2010 Detroit Diesel DD13 / DD15 / DD16 Engines Service & Repair Manual This comprehensive guide is tailored for the maintenance and repair of 2007-2010 Detroit Diesel DD13, DD15, and DD16 engines. 5 mpg while cruising at 70 mph with light loads from Amazon. 8 Liters, it is regarded As an efficient and powerful option for heavy-duty use. See how this engine continues The DD15 features advanced technologies such as a variable geometry turbocharger, a high-pressure common rail fuel system, and an amplified common rail fuel injection system. Ensure optimal performance and longevity. INJECTORS or BAD DPF DELETE??? Explore common diesel engine problems and troubleshooting tips for Cummins ISX and Detroit DD15 engines. Oct 20, 2018 · Detroit dd15 longevity? Discussion in ' Ask An Owner Operator ' started by homesick, Oct 20, 2018. Jun 6, 2019 · 5. Learn why the fuel pump become weak or malfunction and how to fix. 85 Feb 20, 2020 · Anyone know the difference in fuel mileage between 400 vs 505 hp engine? Just curious Apr 11, 2016 · Newly designed Detroit DD15 engine updated piston design and ACRS fuel system drives enhanced performance and fuel efficiency. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / Freightliner related help / DD15 LOSS OF POWER. Apr 22, 2014 · The DD15's will do better generally against any series 60 fuel wise. 8 Pressure Limiting Valve Leakage 5. It comes with loads of impressive features that make it a high-performance and durable engine. Of course the fuel efficiency will vary depending on weather, hauled weight, tires and so on. The DD15 is more fuel-efficient than the ISX, particularly at RPM lower than 1,500 The ISX has a wider power band than the DD15. PDI Big Boss™ Tuning and Engine Products for Detroit DD Series engines are built to improve fuel mileage, increase horsepower, and deliver more torque. Feb 6, 2016 · I recently purchased a 2010 cascadia with the DD15. Aug 6, 2017 · Looking at some advice on mpg between 12. The Integrated Detroit Powertrain combines with the aerodynamic improvements of the new Cascadia® to produce the industry’s next generation of fuel economy. Any insight would be appreciated. Biggest problem is keeping the fuel rail where it enters the Apr 29, 2021 · What Symptoms Tell Me It’s Time to Overhaul My DD15? You might be wondering what symptoms indicate it’s time to rebuild your DD15 diesel engine. Let’s break down what sets this engine apart. Many detroit Engines are added daily. This increased fuel consumption can significantly affect the diesel engine’s fuel economy, leading to higher operational costs. Loss of fuel prime often results from air entering the fuel system via worn pump seals or loose fittings. Would the mpg increase if I got a newer cascadia with a dd13/15 over the 12. The DD13 is lighter and quick to respond, ideal for frequent stops and tighter routes. Using fuel line tool J–48770. Learn more at https://www. Dd15 Engines For Sale. Excessive fuel burning in a DD15 engine can stem from faulty fuel injectors, poor combustion chamber sealing, or turbocharger issues. Available for all trucks with DD13, DD15, and DD16 series engines built from 2010-2020. Demand Great Fuel Economy THE INTEGRATED DETROIT ® POWERTRAIN The Integrated Detroit ® Powertrain combines our most fuel efficient engines ever, the GHG17 DD13® and DD15®, with the technologically advanced DT12 ® transmission and Detroit ® tandem high speed ratio tandem axles to help you get the most out of every gallon of fuel. However I would like to hear from people with first hand experience what fuel mileage are you guys getting from these new trucks. Looking for outstanding fuel economy to move freight across town or across country? Need optimal horsepower and torque response to handle tough jobs and rugged conditions? If your Freightliner or Western Star trucks are powered by Detroit engines, you've got nothing to worry about. The DD15 is also a larger engine and considered more heavy duty than the DD13. Nov 13, 2011 · 2011 cascadia dd15 fuel mileage Discussion in ' Freightliner Forum ' started by 01blackz28, Nov 13, 2011. What can I expect for fuel mileage between the two engines? 80,000 gross Nov 15, 2025 · Daimler Truck has improved it’s 15L engine for Class 8 long-haul trucks in North America. If the suspect cylinder is stuck at the limit for longer than 3 minutes, check the following Feb 28, 2019 · They find the DD13 tends to be the best fit in regional applications, while the DD15 leads the long haul segments where fuel economy and performance are most important. Whether you’re a fleet manager, diesel technician, or independent truck owner, having access to comprehensive repair Oct 19, 2007 · Detroit Diesel DD15 Debuts: Better Fuel Economy, Performance The engine maker said it features best-in-class fuel consumption as well as power and performance. New Axles Designed for Fuel Economy: To provide optimum efficiency and performance, the Detroit ® Powertrain includes an all-new axle specifically designed to integrate with the downsped DD13, DD15 and DT12®, resulting in rock-solid reliability and durability. DD15: Which Engine Is The Best Overall for operating at 80K Gross or less, and why? There is a difference of 10 in torque: 1600 for the DD15 and 2000 for the DD16. Continue to monitor cylinder (s) that reached a positive 100%. But, you can generally expect 6-9 MPG with a DD15, and 6-8 with a SEries 60. I also own other Cascadias equipped with a DD15 engine at 455hp, the same DT12 transmission, and a 2. Poor fuel economy and rough idling can stem from a malfunctioning intake throttle valve or faulty fuel doser. It has the same fuel efficiency as the DD13 – from 6. All May 22, 2019 · Section 15. The 2003 and older Series 60 were the best performers. DD15/DD13 Diesel Engine APPLICATIONS The DD15/DD13 engine is a heavy-duty engine that is intended for all heavy-duty on-highway truck and coach applications, and features improved fuel economy and enhanced performance. meaning a larger range of efficient operating speeds Sep 3, 2022 · Brand new 2022 Cascadia DD15 gets bad fuel economy Discussion in ' Freightliner Forum ' started by VeggiePizza02, Sep 3, 2022. The question? Which is the better Detroit engine today for a typical 80K or less trucking operation? The DD13 or the The DD15 engine touts impressive power ratings, an innovative aftertreatment system and other key features to increase efficiency, durability and performance. The DD13 strikes a balance between performance and fuel efficiency, making it ideal for regional hauling, construction, and municipal service applications. . With its advanced engineering and performance Feb 27, 2018 · The DD15 is designed or expected to go 1,000,000 miles and I think I read the DD13 was 750,000 miles. 8L inline-6 delivering 400-600 HP and up to 2,050 lb-ft of torque, combining pulling power, fuel efficiency, and EPA-compliant emissions for Class 8 trucks. Best Oil For DD15 Engine Click on the Links Below to Check the Latest Price on Amazon 1. Jun 8, 2019 · DD15 Troubleshooting - Section 8. If you are traveling coast to coast and frequently moving from the Midwest to the East, I would not recommend the DD15. The reason why people like the x15 so much is because it has the best regen system available on the market, couple that with a high mile per gallon efficient motor and you have a profitable truck. Feb 15, 2017 · “By focusing on maximizing downspeeding, the fleet owner has the best chance of improving fuel efficiency,” explains Tom Lehman, product manager for Detroit Components. Jul 22, 2019 · I'm looking at going Owner Operator fairly early in 2020, pulling end dumps for Oakley. 55s? Would fuel economy be similar? Archived post. Visit us today to learn more about our DD15 engines. Jan 11, 2025 · The Detroit DD15 engine is a powerful and efficient diesel engine used in heavy-duty commercial trucks. dema The Detroit® DD15® is the perfect diesel engine for long-haul and heavy-duty vocational applications, delivering amazing power, control and fuel economy. 7 Detroit’s in western stars and fld120s, and a 3406B cat in 94 Pete 379. Cover the Continuing the legacy of efficiency, durability and performance, the DD15 ® engine is powerfully built with impressive ratings, increased downspeeding for better fuel economy and versatility in a wide range of applications. So Apr 14, 2022 · To improve fuel economy and reduce expensive trips to the fill-up station, owners, fleet managers, and drivers should choose the most efficient truck for their line of work. My average MPG is always 7. 0 - 6. Or, Kenworth 680 MX13, slightly less mileage. I don’t have much experience with the Cummins engine, but the parts are certainly more expensive than Detroit parts. In my experience with a 2010 model, the 2013 with the DD13 provided better fuel mileage and lower overall maintenance. Watch the Detroit engineering lab team rigorously inspect, test and analyze a DD15® engine that has logged over 760,000 miles. Regular maintenance and thorough inspections can help to prevent and address these common problems with the DD15 engine. ― Enhancements to the Detroit DD15 engine and an expanded lineup of the popular Detroit DT12 automated manual transmission will benefit Freightliner Cascadia customers with better fuel economy, performance and durability. The DD15 was designed for heavy haul. My fuel efficiency is around 7. How would you compare reliability, longevity, and fuel economy between the two DD15® ON-HIGHWAY TECHNICAL SPECS EADING EFFICIENCY, PERFORMANCE AND DURABILI KEY ON-HIGHWAY FEATURES INCLUDE: BETTER COMBUSTION FOR BETTER FUEL ECONOMY. This iteration achieved a 3% improvement in fuel economy, with real-world tests showing 6-9 miles per gallon depending on load and driving conditions. These innovations help optimize performance and maximize fuel economy. 1 - 5. Will be used to haul from Transfer Station to Landfill all localwork. May 8, 2024 · The Detroit DD15 engine, widely recognized for its robust performance in the trucking industry, has its share of common issues that owners and operators might encounter. In the DD5, DD8, DD13, DD15, and DD16 engines, potassium levels may reach as high as 300 ppm during the first oil change with no adverse effects. This unit will provide an extra 60, 80 or 100HP gain in usable horsepower and corresponding torque output, with improved fuel economy and engine efficiency. Therefore, if you have a bad/faulty fuel pump and cannot provide the engine with the necessary amount of fuel, the DD15 engine in your vehicle will eventually fail. Jan 28, 2018 · Hello, Does anyone have some real world MPG statistics for the 2019-20 Freghtliner Cascadia DD15 engine with the DT12 automatic? Just got the 2020 and hoping to get 8MPG running it under 70 and going out west from Chicagoland area, thanks for any input. 9 MPG at 1,625 RPM. Increase power, improve efficiency, and enhance driveability. Some things you should keep an eye out for include: Excessive Blow-by Poor Performance Poor Fuel Mileage Rough Running Oil Consumption What is Blow-by in My Diesel Engine? Blow-by, one of the biggest indicators that it’s time for a rebuild, is How to get better MPG, preventive maintenance schedule, hoe to have a fuel economy truck, and the importance of DPF cleaning. Feb 28, 2025 · Learn about DD15 engine oil: type, capacity, filter, and change cost. Sep 20, 2023 · 2023 freightliner Cascading DD15 Gen 5 14. Torque is Dec 30, 2017 · Looking for someone who can tune my 2009 freightliner cascadia with dd15 for better fuel economy emessions delete already performed will pay for services have detroit Cascadia DD15 may face fuel pump seal leaks and air intrusion causing loss of fuel prime overnight. Detroit rear axles can be 3 days ago · Rawze. Here's everything you need to know about the engine. Freightliner MPG Many Freightliner models, particularly those in the Cascadia series, achieve an average fuel economy of 7 to 9 miles per gallon. Dec 29, 2008 · DD15 bad fuel mileage Discussion in ' Trucks [ Eighteen Wheelers ] ' started by BulletProof, Aug 19, 2015. I have now driven 6000 miles and am averaging 6. It offers improved fuel economy, enhanced performance, and greater reliability compared to its predecessors. Our guide to help you understand what goe into Freightliner and Western Star trucks. The next-generation Amplified Common Rail Fuel System (ACRSTM), a variable-speed water pump and optimized oil pump help maximize fuel economy. DD15 Troubleshooting: Top Issues and Fixes Regarding diesel engines, the Detroit DD15 is regarded as one of the best. Discover the best fuel-efficient truck engines in the United States. diesel engines, the Gen 5 continues the legacy Mar 16, 2020 · The DD15 incorporates a variety of innovations. An updated piston design improves both efficiency and durability. Explore top engines like Cummins X15, Detroit DD15, PACCAR MX-13, Volvo D13TC, Mack MP8HE, and International A26 in this guide. Oct 24, 2023 · A Freightliner's fuel consumption is largely determined by engine design, weight load, and aerodynamics, among other factors. My question is how much fuel is used if you idle at 900 rpm’s. It boasts a host of impressive features that make it a durable, high-performance engine. Take a look at our DD13®, DD15®, DD15® TC and DD16® models. The DD15 engine has a reputation for its impressive power ratings, innovative after-treatment system, and versatile application range. Get all the details you need for optimal engine maintenance. Would you go with a dd15 and 2. Feb 1, 2008 · Check out this 1. They're designed to perform and built to last. Jul 29, 2024 · The Detroit DD15 diesel engine has solidified its position as a powerhouse in the trucking industry. To give you a better idea of your options, Commercial Truck Trader is sharing the top four fuel-efficient big rigs available on the market. But the DD13 was not exactly designed for heavy haul, which is why you normally don’t see it on mega fleet trucks. Ignoring the warning signs can turn a small issue into a major headache. New vs old technology. Our remanufactured Detroit Diesel DD15 engines come as 3/4 long blocks finished with components built back to original OEM spec and new aftermarket parts. Check the fuel filter housing for proper sealing. Inspect the lift pump, fuel lines, and injectors for leaks or cracks. Dd13 vs Dd15 light loads All else equal on two trucks hauling light loads in California. But the cost of running a DD15 can be a problem. 4 Fuel InjectorsDisconnect appropriate high pressure line at the camshaft frame and fuel rail. Fortunately, everything has a solution, and if we know what the common DD15 FUEL ECONOMY In the new DD15 Gen 5, ultra-high compression ratios paired with a new swirl piston design make combustion even better than in the previous industry-leading engine. Oct 13, 2008 · The DD15 engine provides horsepower through 2100 rpm, but fuel economy is not as efficient above 1800 rpm. Jan 10, 2013 · Meanwhile, today’s modern technology has enabled engines of both sizes to deliver relatively high horsepower and torque while turning in fuel economy numbers unachievable a decade ago. Oct 12, 2025 · In this article, you will learn the symptoms of a failing fuel pump in the DD15 engine. Stock: 1331 Year: 2021 Make: Freightliner Model: Cascadia Motor: DD15 Mileage: 533,581 Transmission: DT12 Automatic Engine Horse Power: 505 Engine Brake: Ratio: 2. It offers excellent wear protection, improved fuel economy, and enhanced resistance to deposits and sludge formation. The program It’s not an issue at all. Jun 24, 2021 · Observe the following cautions when fueling the vehicle or working with the fuel system. . Many dd15 Engines are added daily. Below is a comprehensive guide on everything you need about Detroit Diesel DD15 ECM / ECU repair service. Additionally, some users have reported issues with the turbocharger and related components. The most accurate Freightliner Cascadia MPG estimates based on real world results of 11. Potassium from brazing flux may be perceived as a coolant leak at these levels. View and Download Detroit Diesel Engine DD15 instruction manual online. So, opinions from those who own the later X15, MX13 and dd15 that have some miles on them would be appreciated Nov 30, 2023 · Unlock the true potential of your Detroit Diesel DD15 engine with ECM tuning secrets. 85 rear ratio, which Aug 1, 2023 · Other symptoms to be mindful of include engine idling, stalling or power loss, increased emissions, and reduced fuel economy. The best source for new and used detroit Engines for sale. And the DD15 meets GHG14 certification and The DD15 incorporates a variety of innovations. Mobil Delvac 1300 Super 15W-40 Mobil Feb 10, 2025 · The Detroit Diesel DD15 Gen 5 is the latest evolution of one of the most reliable and efficient heavy-duty engines on the market. Jul 17, 2018 · Buried in another thread on the forum, is the potential for a pretty informative discussion, one that may affect the purchasing decision of many current and future truck owners. I currently at a tanker company and really like the mid roof Cascadia DD13, DT12 combo. Oct 10, 2023 · DD15 Faulty Fuel Injector Troubleshooting For diagnostics more emphasis needs to be placed on a cylinder in the positive or negative range when checking the ISC value. We would like to show you a description here but the site won’t allow us. Only 400hp on those trucks so I'm curious how they'd pull the mountains but I'm going to try to stick to the Midwest except for maybe a couple trips to the west coast a year. And future HD regulations in California will require further The dd13 and dd15 is just difference in displacement. 47 gears or dd13 and 3. Dec 26, 2024 · Introducing Detroit Diesel's powerful and efficient DD15 engine for heavy-duty applications, with improved fuel economy and performance. Fuel Economy Considerations Fuel expenses can heavily weigh on a fleet manager’s shoulders, and both engines provide unique advantages in terms of fuel economy. Search our large inventory of New/Rebuilt/Used Detroit DD15 Engine Assemblies for sale. A patented asymmetric turbocharger reduces complexity and weight while enhancing performance. The DD15 incorporates a variety of innovations. 31 MPG in Semi Truck W/ 76K LBS of cargo Luxury Coach Industry News! Freightliner’s Cascadia Evolution is widely recognized for its superior fuel economy, achieved through a combination of aerodynamic enhancements and cutting-edge engine technology. Designed with enhanced downspeeding for better fuel economy and a swirl piston design for maximum combustion, the DD15 is up to 3% more fuel efficient than our previous model. The model year 2021 Detroit DD15 engine has to comply with the first step of the greenhouse gas (GHG) phase 2 regulations in the US – the other steps are in 2024 and 2027 – while also demonstrating NOx compliance over 435,000 miles. learn more about the dd15 Detroit DD16 Pure Brawn The Detroit DD16® drives like it means heavy-duty business. The #1-rated Detroit service network, in tandem with the Detroit Connect Virtual Technician® remote diagnostic system, helps you maximize uptime. I dont go any more than 3-4 hrs from home and have the option of "modifying " systems if the become too problematic, but would rather not. Built on a legacy of globally tested and consistently proven technology, the DD15 Gen 5 offers industry-leading power and productivity. 2 million miles driven in 175 Freightliner Cascadias Dec 13, 2023 · The DD15 engine is known to have issues with fuel system components such as fuel pumps and injectors, as well as problems with the EGR (Exhaust Gas Recirculation) system. The #1-rated Detroit service network, in tandem with the Detroit Connect Virtual Technician® remote diagnostic system, helps you maximize uptime. Remove appropriate injector hold down bolt and clamp. Renowned for its power, efficiency, and durability, the DD15 is a top choice for heavy-duty applications. Detroit Diesel DD15 Features & Specifications Specifications Horsepower: 425 - 525 Peak torque: 1550 - 1850 Fuel Economy: 5. Now I see people say it’s a gallon Sep 20, 2023 · The Powerhouse: Detroit DD15 Engine The Detroit DD15 engine is a true powerhouse. Jul 5, 2019 · The DD15 is better but the Series 60 will stay pretty close to it on the mileage end at 5. Dec 8, 2012 · What are the pros and con of the DD13 and DD15 Detroit Engine. 8 liters. If I was pulling lots of mountain I would want the bigger block DD15 or DD16 if you really want power. Detroit DD15: A Modern Powerhouse Key Features and Benefits: Unmatched Detroit Diesel DD13 & DD15 Performance Tuning Reliably Adds Fuel Economy MPG's, Power HP Torque TQ to Help reduce Throttle and Boost Lag! Customer: I have a Freightliner Cascadia 2021 with a DD15 engine rated at 505hp and a DT12 overdrive transmission designed for highway efficiency, featuring a 2. “Along with Detroit DD15 or DD13 engines and Detroit DT12 automated manual transmissions, Detroit rear axles and rear axle ratios are specifically designed to support downspeeding functionality. It's well-regarded for its performance, fuel economy, and durability. 2 pulling 100,000 on northwest grades. Oct 28, 2025 · Browse Detroit DD15 Engines For Sale near you on MyLittleSalesman. The engine is part of the Detroit heavy-duty engine family, alongside the larger DD15 and DD16. Jul 2, 2021 · Getting a new truck and considering the new DD15 @505 horse or DD16@500. Jun 6, 2019 · DD 15 - Section 35. Using factory weather proof connectors this unit is a true "plug and play" system that Oct 26, 2022 · The DD15 engine depends on the fuel pump to supply a precise amount of fuel at the right time for the engine to function properly without any glitches. The Detroit DD16 engine tackles your hardest jobs while performing with the fuel efficiency and reliability you’ve come to count on from Detroit. I've heard of companies getting fleet averages of 8+ but seems like they were talking May 27, 2020 · Enhancements to the Detroit DD15 engine, combined with an expanded lineup of the DT12 automated manual transmission, have resulted in improved fuel economy, performance and durability, according to the company. Apr 1, 2018 · Late model (2015 and newer) Cascadia with the DD13 or DD15, general reliability, availability of parts at dealers and truckstops, ease of servicing, mpg in a variety of circumstances? Mechanics and other drivers seem to like the DD15, and there are bazillions of used ones on the market because it's ex-fleet. com. 5 Billion Dollar engine featuring the Detroit Diesel DD15 with 1,850 lb-ft at 1,100 rpm torque inside Diesel Power Magazine. 0 MPG to 6. Torque that Takes You Further One of the standout features of the Detroit DD15 is its torque response. The 2nd Generation Amplified Common Rail Fuel System (ACRSTM), a variable-speed water pump, and optimized oil pump help maximize fuel economy. Jun 3, 2024 · The DD15 Engine is not only powerful, it's made to be future-proofed against future standards. Let's dive deeper into this engine's strengths, weaknesses, and the broader context of Detroit Diesel's rich heritage. Detroit DD15 Diesel Engine The Detroit DD15 is a 14. DETROIT’S POWER PACKED DD15 IS REDEFINING PERFORMANCE This impressive engine delivers incredible torque response and power, increased economy, extremely long torque range, reduced maintenance intervals and smoother, cleaner drive. With a focus on high performance, this diesel engine boasts an impressive torque response that makes it ideal for climbing hills and hauling heavy loads. In the last 40,000 miles the oil consumption has gone from zero to 1 gal. If you decide to drive at lower rpm’s for improved fuel economy, don’t let different engine noises throw you off guard. Start by inspecting injectors for leaks or clogging, which cause incomplete fuel atomization. 2. The DD15 employs sophisticated fuel injection technology that optimizes combustion and maximizes energy use. The positive range implies that more fueling is needed to maintain a smooth running engine. My company truck is spec for light weight so the DD13 makes sense for them because they ttrade the trucks in at 400,000 miles. RV Motorhome Detroit Diesel DD13 & DD15 Performance Tuning Reliably Adds Fuel Economy MPG's, Power HP Torque TQ to Reduce Throttle Boost Lag! The Detroit® DD15® is the perfect diesel engine for long-haul and heavy-duty vocational applications, delivering amazing power, control and fuel economy. The reason I’m asking is I have 3 12. Find the best priced new and used Detroit DD15 Engines by owners and dealers. I run flatbed. Oct 19, 2007 · Detroit Diesel DD15 Debuts: Better Fuel Economy, Performance The engine maker said it features best-in-class fuel consumption as well as power and performance. So please provide some range and CAT, Cummins, Volvo, Mack, & Detroit Performance/Fuel Economy Products At Heavy Diesel Tuner we strive for 100% customer satisfaction. Whether you're comparing specs for linehaul or city fleet needs, the DD15 and DD13 each deliver tailored efficiency. Diesel Engine: An internal combustion engine that operates using diesel fuel. It includes components such as the fuel tank, fuel pump, fuel filters, and fuel injectors. New comments cannot be posted and votes cannot be cast. These problems can range from minor annoyances to more significant mechanical challenges that require attention: Low Oil Pressure: This issue tends to appear especially after the engine has accumulated significant mileage Jan 12, 2020 · Detroit Diesel's components that make their powertrains. 7? Used trucks are going at good prices right now with the low rates. Detroit DD15 Engine: A specific model of diesel engine produced by Detroit Diesel. May 28, 2021 · Detroit DD15. With power ratings that range from 505 to 425 HP And a capacity of 14. Mar 13, 2017 · Poor fuel mileage on 2011 cascadia dd15 Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by johnnyman1099, Apr 22, 2017. MPG, dependability, and reliability do. The 455 hp engine will go slower on upgrades, but if the truck has an automated transmission and you activate the manual HDT-DDEC5 2003-2007 Detroit DDEC5 Series 60 Power Module The HDT-DDEC5 Module was designed to upgrade power on all Detroit Series 60 – DDEC5 engines. Feb 9, 2025 · When your ECM malfunctions, it can lead to poor fuel economy, rough idling, and complete engine shutdown. Aug 23, 2013 · I found some good deals on 2012 Freightliners that are between 450K-600K miles. The ones with lower miles are Detroit DD13 engines while the trucks in Feb 16, 2015 · Here are some comparisons between the Detroit DD15 and the Cummins ISX, including feedback from truckers who have actually operated each. This will cause the MCM software to relearn the ISC values. Jul 23, 2025 · The DD15 Gen 5, introduced in 2021, further improved performance with a redesigned aftertreatment system that reduced weight by 60 pounds and enhanced thermal management. This model is powered by the Detroit® DD15 and DD13 engines, which are specifically designed to improve fuel combustion and reduce energy waste. However, like any good engine, it can develop long-term issues—especially if regular maintenance is neglected. 17 Poor Fuel Economy Customer expectations of fuel economy are usually based on past experiences, recommendations from colleagues or sales staff, and wishful thinking. Powering Freightliner and Western Star trucks, this engine offers improved fuel economy, enhanced durability, and advanced emissions control. Why 13 My detroit diesel DD15 has 586,000 miles. The new Reduced Flow Oil Pump also helps deliver greater fuel economy with an improved design, reduced weight, and functionality that helps reduce parasitic load on the engine. g and an improved swirl piston design GREATER RELIABILITY THAN EVER BEFORE. May 27, 2020 · PORTLAND, Ore. This impressive engine delivers incredible torque response and power, increased fuel economy, extremely wide torque range, extended maintenance intervals, and a smoother, cleaner ride. Fixing a bad DD15 injector will involve a repair or replacement, depending on its state. Learn why it's a top choice in the heavy-duty diesel market. The best source for new and used dd15 Engines for sale. Here are some features of the Detroit DD15 diesel engine. However, this is merely a generic figure. What's different about these engines? EVERYTHING. I don't like the 65 mph governor and would never have that in a personal truck. The variations are between 400-505hp and about 1,471-1,671lb-ft of torque. Discover the Detroit DD15 engine's design, performance, and advanced technologies. 10 Isb (Idle Speed Balance) Values 5. When it comes to diesel engines, the Detroit DD15 is the one to beat. Again Sep 3, 2013 · The DD15 meets 2013 OBD (OBD13) and 2014 Greenhouse Gas (GHG14) regulations. Detroit Diesel DD15 Diesel Engine Averages 9. 6 Fuel System Leak Detection and Threshold Resetting 5. Enjoy our hassle-free online checkout or call to speak to an expert. This impressive engine delivers incredible torque response and power, increased fuel economy, extremely wide torque range, extended maintenance intervals and a smoother, cleaner ride. The DD15 engine sounds quiet at 1400 rpm, almost as if it had quit pulling. Does this number seem low or is a real The DD15 incorporates a variety of innovations. Known for their fuel efficiency and power, diesel engines are commonly used in heavy-duty vehicles like trucks. Our team has spent over 22 years developing and refining our ECU Tunes and Plug-In Units to offer you the very best in industry power and fuel economy increasing products. And the Series 60 14L will out pull the the DD16 rated at 565 hp. Detroit Engines For Sale. 50+ which I really like. 9 Pumping Element Concerns 5. The DD13 are normally seen on local/regional trucks or on fleets that don’t haul heavy. Looking to purchasing a Freightliner Cascadia day cab. 7 and the newer dd13/15. It is paramount that the end user attain reasonable expectations, based on sound predictions. THE DETROITTM DD15® ENGINE TAKES INNOVATION TO A WHOLE NEW LEVEL. 85 rear ratio. 9 mpg short haul | 6. And the DD15 is GHG17 compliant. Shell Rotella T6 Full Synthetic 15W-40 Shell Rotella T6 is a premium full synthetic heavy-duty diesel engine oil designed for engines like the DD15. Designed for construction, distribution, dump, fire and emergency, government, motor home, oil & gas, refuse, and regional. Feb 17, 2013 · DD15 bad fuel mileage Discussion in ' Trucks [ Eighteen Wheelers ] ' started by BulletProof, Aug 19, 2015. Some of the causes of these symptoms range from stuck, worn, and clogged injectors. deehlhwkzuorgqgwxkreiaevpxdyqpiedzyinxtzustkdkcktjksuyrsmwazquxsfgiujxfan