2021 6.7L Powerstroke Diesel Truck Specs, Towing Ratings, Performance, and Maintenance Information
One of the most powerful and capable Diesel engines being manufactured for use in heavy duty trucks today is Ford’s 6.7L V-8 Powerstroke engine. It is the premier powertrain choice in Ford Superduty Trucks and Cab & Chassis trucks. 2021 Ford Superduty Trucks, Ford F-250, F-350, and F-450s, have 475 horsepower and 1050 lb-ft of torque when mated to the 6.7L Powerstroke V-8 Diesel engine and the 10R140 10-Speed automatic transmission. These incredible performance numbers help deliver serious towing capabilities and plenty of power for passing. This powertrain doesn’t come cheap however, costing thousands of dollars more than the standard 6.2L V8 gasoline-powered engine, or even Ford’s new Godzilla 7.3L V-8 gasoline-powered engine.
Depending on how you plan on using the 2021 Ford Superduty you are considering buying, you might not need the 6.7L Powerstroke engine. Even if you have decided to purchase the 6.7L Powerstroke (We highly recommend it), you also have a ton of different options. Should you go with a single rear-wheel (SRW) Ford F-250, or should you go all out with the Ford F-450 Dually. In this post, our 2021 Ford 6.7L Powerstroke Buyer’s Guide, we’ll compare the different Superduty trucks when equipped with a 6.7L Diesel engine side-by-side. We’ll give your 2021 Ford 6.7L Powerstroke V-8 Engine specs, performance information, Towing Ratings, and even tell you the required maintenance needed on these vehicles. Let’s get into it.
There are a number of different trims, feature packages, and other factors that will play a role in your decision too. Visit our 2021 Ford Superduty Buyer’s Guide for more information on interior and exterior specs, technology insight, and package overviews on these trucks.
2021 Ford 6.7L Powerstroke V-8 Diesel Engine
Since the 6.7L Powerstroke V-8 Diesel engine was introduced in 2011, it’s been a staple in Ford Superduty Trucks. It replaced the problematic 6.4L Powerstroke that was the last International Navistar made motor used in Ford Diesel trucks. It’s been so successful that even 10 years later, it is still being used by Ford. The 6.7l Powerstroke is far from the same engine it was 10 years ago though. It’s been improved upon, and 2021 Superduty trucks use the third generation 6.7L Powerstroke engine. In our next section we go further into detail about this engine and its design.
6.7L Powerstroke Engine Design & Features
The 6.7L Powerstroke engine is a diesel, 90-Degree 8-cylinder engine that features an OHV, or Overhead Valve design. It offers drivers the best of durability and performance using the latest technology and materials. It is also significantly quieter than previous Ford diesel engines.
For a strong foundation, the 6.7L Powerstroke uses a Compacted Graphite Iron block. CGI blocks offer great durability while simultaneously being significantly lighter. This feature paired with other engine design elements like Aluminum cylinder heads reduce overall engine weight. These, along with other engine design elements and the Superduty’s aluminum body paneling contribute to better fuel efficiency. When compared to previous iterations of Ford’s 6.7L Powerstroke engine, the third generation features a number of structural enhancements to handle the tremendous capabilities of these engines. The Cylinder head, engine block, connecting rods, and bearings offer greater reliability and the ability to withstand greater cylinder pressures and the extra output. New steel pistons are also used in these engines for higher firing pressure and lower friction.
Performance
2021 Ford Pickup trucks with the 6.7L Powerstroke Diesel engine offer a segment high 475 horsepower and 1,050 lb-ft of torque from the factory. Previous numbers only attainable by diesel tuning and other diesel performance mods, these numbers are more than enough for most owners. Throttle response while driving empty, loaded with cargo, or while towing a heavy trailer is impressive. Thanks to the truck’s lightweight body, and weight-saving engine design, fuel economy is also incredible. Previously ignored on diesel trucks, there is another element that qualifies as a performance characteristic, quietness. Thanks to the latest technology, these engines are as quiet as they are capable.
There are a couple of 6.7L Powerstroke features that make the greatest impact when it comes to these engines performance, efficiency, and quietness. The third generation 6.7L Powerstroke utilizes a new fuel injection system with new injectors. These injectors reduce noise and improve combustion by offering up to 8 injection events per stroke and more precise fuel spray. A highly-advanced, electronically-actuated Variable Geometry Turbocharger also gives owners ideal performance characteristics.
2021 Ford 6.7L Powerstroke Specs
| Year: | 2021 |
| Configuration: | 90-Degree Diesel V8 |
| Displacement: | 6.7 Liters or 406 cubic inches |
| Bore: | 3.897 inches or 99 mm |
| Stroke: | 4.251 inches or 108 mm |
| Cylinder Head: | Cast Aluminum |
| Engine Block: | Compacted Graphite Iron or CGI |
| Firing Order: | 1-3-7-2-6-5-4-8 |
| Compression Ratio: | 15.8:1 |
| Fuel Injection: | High Pressure Common Rail |
| TurboCharger: | Variable Geometry Turbocharger (VGT) |
| Valve Operation: | pushrod/rocker arms, 4 valves per cylinder |
| Transmission(s): | TorqShift 10R140 Automatic 10-Speed Transmission |
| Engine Oil Capacity: | 13 Quarts or 12.4 Liters |
| Cooling System: | Pressurized Series Flow |
| Emissions Devices: | Diesel Oxidation Catalyst (DOC) Diesel Particulate Filter (DPF) Selective Catalytic Reduction (SCR) Exhaust Gas Recirculation (EGR) |
| Fuel: | B20 Biodiesel Compatible & Ultra Low Sulfur Diesel |
| Horsepower: | 475 Horsepower @ 2,600 rpm |
| Torque: | 1,050 lb-ft @1,600 rpm |
6.7L Powerstroke V-8 Vs. 6.2L Gas Powered V-8 Vs. 7.3L Gas Powered V-8
There are three distinct powertrain choices for the 2021 Ford Super Duty Pickup truck. The base model is a 6.2L V-8 engine offering the lowest performance figures but it’s a simple, rugged workhorse that makes a great fleet vehicle. The middle option is a newer, 7.3L “Godzilla” V-8. No, it’s not the 7.3L Powerstroke we all know and love, but it offers greater performance than the 6.2L V-8 while also being a non-complicated motor that is durable. This is another great option for fleets or for those wanting better performance than the base 6.2 V-8 offers. The third and last option is the 6.7L Powerstroke. This is the premier choice for haulers and people who need serious capability. The 6.7l Powerstroke is a Diesel engine that has made a name for itself in the last 10 years as being one of the most powerful and reliable diesels around.
For a full comparison of how these engines compare against each other, look at the chart below. You can compare critical engine design information as well as performance specs.
2021 Superduty Powertrain Side-By-Side Comparison
| Powertrain | 6.7L Powerstroke Diesel | 6.2L Gas | 7.3L Gas “Godzilla” |
| Displacement | 6.7 Liters or 406 Cubic Inches | 6.2 Liters or 379 Cubic Inches | 7.3 Liters or 445 cubic inches |
| Configuration | 90-Degree V8 Diesel In-Block Cams, OHV | 90-Degree V8 Single overhead Cams | 90-Degree V8 Single in-Block Cams |
| Engine Block | Compacted Graphite iron | Cast Iron | Cast Iron |
| Cylinder Head | Aluminum | Aluminum | Aluminum |
| Bore | 3.9″ | 4.02″ | 4.22″ |
| Stroke | 4.25″ | 3.74″ | 3.98″ |
| Compression Ratio | 15.8:1 | 9.8:1 | 10.5:1 |
| Valvetrain | 4 valves per cylinder Pushrod and Rocker Arms | 2 Valves per cylinder, roller rocker shaft | 2 valves per cylinder, pushrod and rocker arms |
| Fuel Type | Ultra Low Sulfur Diesel | 87 Octane | 87 Octane |
| Fuel Systems | High-Pressure Common Rail | Sequential Multi-Port Electronic | Sequential Multi-Port Electronic |
| Aspiration | Variable Geometry Turbo, Charged air cooler | Naturally Aspirated | Naturally Aspirated |
| Horsepower | 475 @ 2,600 rpm | 385 @ 5,750 rpm | 430 @ 5,500 rpm |
| Torque | 1,050 @ 1,600 rpm | 430 lb-ft @ 3,800 rpm | 475 lb-ft @ 4,000 rpm |
| Fuel Tank Size | Regular Cab: 29 Gallons Super Cab: 29 or 34 Gallons Crew Cab: 34 or 48 Gallons | Regular Cab: 34 Gallons Super Cab: 34 Gallons Crew Cab: 34 or 48 Gallons | Regular Cab: 34 Gallons Super Cab: 34 Gallons Crew Cab: 34 or 48 Gallons |
| Max Conventional Towing*** | 24,200 lbs | 16,700 Lbs | 21,000 lbs |
| Max Gooseneck/ 5th-Wheel Towing*** | 37,000 lbs | 16,700 lbs | 21,200 lbs |
2021 6.7L Powerstroke Towing
The 2021 6.7L V-8 Powerstroke engine is built in-house, and these motors when used in 2021 Ford F-250, F-350, and F-450 Superduty trucks produce 475 horsepower and 1,050 ft-lbs of torque. This along with structural and suspension upgrades, allow 2021 Ford Superduty Trucks to tow a maximum of 37,000 lbs. Tow capacity is affected by number of different factors however, so we decided to create the follow chart. In our 2021 6.7L Powerstroke towing guide, we’ll cover tow ratings for conventional towing and fifth-wheel/gooseneck towing.
Regular Cab Towing Specs
Max Conventional Towing Capacity
| Rear Axle | Axle Ratio | Max GCWR | F-250 4×2 | F-250 4×4 | F-350 4×2 | F-350 4×4 | F-450 4×2 | F-450 4×4 |
| SRW | 3.31 | 23,500 lbs | 15,000 lbs | 15,000 lbs | N/A | N/A | N/A | N/A |
| SRW | 3.31 | 30,000 lbs | 15,200 lbs | 15,000 lbs | 15,000 lbs | 15,000 lbs | N/A | N/A |
| SRW | 3.55 | 30,000 lbs | 15,200 lbs | 15,000 lbs | 15,000 lbs | 15,000 lbs | N/A | N/A |
| DRW | 3.55 | 40,000 lbs | N/A | N/A | 21,000 lbs | 20,000 lbs | N/A | N/A |
| DRW | 4.1 | 43,400 lbs | N/A | N/A | 21,000 lbs | 20,000 lbs | N/A | N/A |
| DRW | 4.3 | 45,300 lbs | N/A | N/A | N/A | N/A | 21,200 lbs | 21,200 lbs |
Max Fifth-Wheel/Gooseneck Towing Capacity
| Rear Axle | Axle Ratio | Max GCWR | F-250 4×2 | F-250 4×4 | F-350 4×2 | F-350 4×4 | F-450 4×2 | F-450 4×4 |
| SRW | 3.31 | 23,500 lbs | 16,400 lbs | 16,000 lbs | N/A | N/A | N/A | N/A |
| SRW | 3.31 | 30,000 lbs | 22,800 lbs | 21,800 lbs | 22,800 lbs | 22,400 lbs | N/A | N/A |
| SRW | 3.55 | 30,000 lbs | 22,800 lbs | 21,800 lbs | 22,800 lbs | 22,400 lbs | N/A | N/A |
| DRW | 3.55 | 40,000 lbs | N/A | N/A | 32,400 lbs | 32,000 lbs | N/A | N/A |
| DRW | 4.1 | 43,400 lbs | N/A | N/A | 35,750 lbs | 35,400 lbs | N/A | N/A |
| DRW | 4.3 | 45,300 lbs | N/A | N/A | N/A | N/A | 37,000 lbs | 36,400 lbs |
SuperCab Towing Specs
Max Conventional Towing Capacity
| Rear Axle | Axle Ratio | Max GCWR | F-250 4×2 | F-250 4×4 | F-350 4×2 | F-350 4×4 |
| SRW | 3.31 | 23,500 lbs | 15,000 lbs | 15,000 lbs | N/A | N/A |
| SRW | 3.31 | 30,000 lbs | 15,200 lbs | 20,000 lbs | 15,000 lbs | 20,000 lbs |
| SRW | 3.55 | 30,000 lbs | 15,200 lbs | 20,000 lbs | 15,000 lbs | 20,000 lbs |
| DRW | 3.55 | 40,000 lbs | N/A | N/A | 21,200 lbs | 21,200 lbs |
| DRW | 4.1 | 43,400 lbs | N/A | N/A | 21,200 lbs | 21,200 lbs |
| DRW | 4.3 | 43,500 lbs | N/A | N/A | N/A | N/A |
Max Fifth-Wheel/Gooseneck Towing Capacity
| Rear Axle | Axle Ratio | Max GCWR | F-250 4×2 | F-250 4×4 | F-350 4×2 | F-350 4×4 |
| SRW | 3.31 | 23,500 lbs | 16,200 lbs | 15,500 lbs | N/A | N/A |
| SRW | 3.31 | 30,000 lbs | 22,000 lbs | 20,100 lbs | 22,600 lbs | 22,400 lbs |
| SRW | 3.55 | 30,000 lbs | 22,000 lbs | 20,100 lbs | 22,600 lbs | 22,400 lbs |
| DRW | 3.55 | 40,000 lbs | N/A | N/A | 32,000 lbs | 31,600 lbs |
| DRW | 4.1 | 43,400 lbs | N/A | N/A | 35,400 lbs | 35,000 lbs |
| DRW | 4.3 | 45,300 lbs | N/A | N/A | N/A | N/A |
Crew Cab Towing Specs
Max Conventional Towing Capacity
| Rear Axle | Axle Ratio | Max GCWR | F-250 4×2 | F-250 4×4 | F-350 4×2 | F-350 4×4 | F-450 4×2 | F-450 4×4 |
| SRW | 3.31 | 23,500 lbs | 15,000 lbs | 15,000 lbs | N/A | N/A | N/A | N/A |
| SRW | 3.31 | 30,000 lbs | 18,200 lbs | 20,000 lbs | 18,200 lbs | 20,000 lbs | N/A | N/A |
| SRW | 3.55 | 30,000 lbs | 18,200 lbs | 20,000 lbs | 18,200 lbs | 20,000 lbs | N/A | N/A |
| DRW | 3.55 | 40,000 lbs | N/A | N/A | 21,200 lbs | 21,200 lbs | N/A | N/A |
| DRW | 4.1 | 43,400 lbs | N/A | N/A | 21,200 lbs | 21,200 lbs | N/A | N/A |
| DRW | 4.3 | 45,300 lbs | N/A | N/A | N/A | N/A | 24,200 lbs | 24,200 lbs |
Max Fifth-Wheel/Gooseneck Towing Capacity
| Rear Axle | Axle Ratio | Max GCWR | F-250 4×2 | F-250 4×4 | F-350 4×2 | F-350 4×4 | F-450 4×2 | F-450 4×4 |
| SRW | 3.31 | 23,500 lbs | 16,100 lbs | 14,700 lbs | N/A | N/A | N/A | N/A |
| SRW | 3.31 | 30,000 lbs | 21,700 lbs | 19,100 lbs | 22,400 lbs | 22,000 lbs | N/A | N/A |
| SRW | 3.55 | 30,000 lbs | 21,700 lbs | 19,100 lbs | 22,400 lbs | 22,000 lbs | N/A | N/A |
| DRW | 3.55 | 40,000 lbs | N/A | N/A | 31,800 lbs | 31,300 lbs | N/A | N/A |
| DRW | 4.1 | 43,400 lbs | N/A | N/A | 35,200 lbs | 34,700 lbs | N/A | N/A |
| DRW | 4.3 | 45,300 lbs | N/A | N/A | N/A | N/A | 34,600 lbs | 32,600 lbs |
Different 6.7L Powerstrokes for Different Needs
2021 Ford Superduty F-250
Ford’s F-250 is the entry level Super duty, offering the lowest towing capabilities, but the best drivability. It comes in the XL, XLT, Lariat, Limited, Platinum, and King Ranch Trims. A newer, Tremor Off-Road Edition is also available offering superior off-road performance. This is attributed to an upgraded suspension including a factory installed lift kit and 35″ Tires.
Capabilities
The 2021 Ford F-250 is the lightest duty truck available with the 6.7L Powerstroke V-8 Diesel. For infrequent towers, and daily drivers the F-250 is your ideal choice. 2021 Ford F-250 pickup trucks with the 6.7L Powerstroke engine have a max conventional tow capacity of 20,000 lbs and a max fifth-wheel/Gooseneck tow capacity of 22,800 lbs . These trucks only come in a single rear-wheel configuration so they’re much lighter than the F-350 or F-450 pickup trucks with dual rear wheels. This lesser weight translates to savings at the pump and less maintenance because you only have to worry about 4 tires, instead of 6 with a dually.
Pricing
Pricing for 2021 Ford F-250s starts at around $46,420 when configured in a base XL trim with 2WD and the 6.7L Powerstroke Engine. The Diesel engine upgrade is a $10,495 upgrade itself. With higher trim, driveline and other configurations the price will go up. Fully decked out Limited packages can exceed $90,000. These of course are MSRP figures and depending on when you buy, you might be able to get rebates that can reduce the price by thousands of dollars. Want to see what rebates are available? Check out our 2021 Superduty Buyer’s Guide for rebate information.
2021 Ford F-250 6.7L Powerstroke Summary Chart
| Ford F-250 Superduty /w 6.7L Powerstroke Engine | 2021 |
| Horsepower | 475 Horsepower @ 2,600 rpm |
| Torque | 1,050 lb-ft @ 1,600 rpm |
| Transmission Options | TorqShift Select-Shift 10-Speed Automatic Transmission |
| Trim Options | XL, XLT, Lariat, King Ranch, Platinum, Limited, Tremor |
| Rear Axle Configurations | Single Rear-Wheel |
| Gear Ratios | 3.31 or 3.55 |
| Fuel Tank Capacity 142″ and 148″ Wheelbase 160″ & 164″ Wheelbase 178″ Wheelbase | See Below 29 Gallons 34 Gallons 48 Gallons |
| Max Conventional Tow Capacity SRW | See Below 20,000 lbs |
| Max Fifth-Wheel/Gooseneck Capacity SRW | See Below 22,800 lbs |
| Max Payload SRW | See Below 4,500 lbs |
| Ford F-250 Pricing Starts At | $35,745 |
Ford Superduty F-350
The Middle-Man of the Superduty lineup is the F-350 pickup truck. Ford’s F-350 offers a little more heavy-duty composition and ruggedness than F-250 pickups. It suffers from slightly stiffer ride quality while unloaded, but it more than makes up for it when it comes to towing and payload. In fact, the Dual Rear-Wheel F-350 has the highest payload figures of the three Super Duty pickups.
Capabilities
Ford’s F-350 has a significant advantage over the F-250 when it comes to towing. It is available in a Dual Rear-Wheel Configuration, commonly known as a Dually. This Rear Axle configuration overs significantly better payload and towing capabilities. It also results in lower fuel economy and higher maintenance costs however. We advise that you seriously consider what you are going to use your truck for. If you are going to be towing frequently the Dually configuration is a better choice. If not, the SRW configuration is the way to go.
Max conventional tow capacity for SRW Ford F-350 pickup trucks with the 6.7L Powerstroke is 20,000 lbs. DRW (Dually) variants have a maximum conventional tow capacity 21,200 lbs. Max Fifth-Wheel/Gooseneck towing capacity is 22,800 lbs on SRW models, and 35,750 lbs on DRW models. This makes the Dually the ideal choice for people towing fifth-wheel campers or gooseneck trailers.
Pricing
Ford F-350 pricing starts at $37,440. This is with the base 6.2L V-8 gasoline engine. The 6.7L Powerstroke diesel V-8 engine is a $10,495 upgrade. Ford F-350 Limited Pricing starts at $87,060 and can exceed $90,000 with options and add-ons.
2021 Ford F-350 6.7L Powerstroke Summary Chart
| Ford F-350 Superduty /w 6.7L Powerstroke Engine | 2021 |
| Horsepower | 475 Horsepower @ 2,600 rpm |
| Torque | 1,050 lb-ft @ 1,600 rpm |
| Transmission Options | TorqShift Select-Shift 10-Speed Automatic Transmission |
| Trim Options | XL, XLT, Lariat, King Ranch, Platinum, Limited, Tremor |
| Rear Axle Configurations | Single Rear-Wheel and Dual Rear-Wheel |
| Gear Ratios | 3.31, 3.55, or 4.1 |
| Fuel Tank Capacity 142″ and 148″ Wheelbase 160″ & 164″ Wheelbase 178″ Wheelbase | See Below 29 Gallons 34 Gallons 48 Gallons |
| Max Conventional Tow Capacity** SRW DRW | See Below 20,000 lbs 21,200 lbs |
| Max Fifth-Wheel/Gooseneck Capacity** SRW DRW | See Below 22,800 lbs 35,750 lbs |
| Max Payload** SRW DRW | See Below 4,960 lbs 7,850 lbs |
| Ford F-350 Pricing Starts At | $37,440 |
Ford Superduty F-450
For people needing the greatest towing capabilities, the Ford F-450 is your ideal solution. The F-450 offers the greatest durability and capabilities of any Ford pickup truck. They’re perfect for people who tow frequent, heavy loads. They are only available in a dual rear wheel configuration (Dually). Therefore, they are heavy and not ideal for commuting unloaded. Unlike the Ford F-250 or F-350, the F-450 comes standard with the 6.7L Powerstroke Engine. That is a major reason for its higher starting price.
Capabilities
While performance figures remain the same, towing figures are greatly improved upon with the F-450. Max Conventional tow capacity for a 2021 Ford F-450 with the 6.7L Powerstroke engine is 24,200 pounds. Max fifth-wheel/Gooseneck tow capacity is 37,000 pounds. Surprisingly, max payload is actually better on F-350 models than the F-450. If you need the higher payload capabilities, stick with the F-350. That being said, the F-450 will do a better job when it comes to durability, and towing heavy loads. If you’re going to be pulling a huge fifth-wheel or gooseneck trailer, the F-450 should garner some serious consideration.
Pricing
Thanks to a standard 6.7L Powerstroke Engine in every F-450, starting pricing on 2021 Ford F-450s is much higher. Base XL models in a regular cab configuration cost $50,410 before any additional upgrades. A fully decked out F-450 can exceed $90,000.
| Ford F-350 Superduty /w 6.7L Powerstroke Engine | 2021 |
| Horsepower | 475 Horsepower @ 2,600 rpm |
| Torque | 1,050 lb-ft @ 1,600 rpm |
| Transmission Options | TorqShift Select-Shift 10-Speed Automatic Transmission |
| Trim Options | XL, XLT, Lariat, King Ranch, Platinum, Limited, Tremor |
| Rear Axle Configurations | Single Rear-Wheel and Dual Rear-Wheel |
| Gear Ratios | 4.3 |
| Fuel Tank Capacity 142″ and 148″ Wheelbase 160″ & 164″ Wheelbase 178″ Wheelbase | See Below 29 Gallons 34 Gallons 48 Gallons |
| Max Conventional Tow Capacity | 24,200 lbs |
| Max Fifth-Wheel/Gooseneck Capacity | 37,000 lbs |
| Max Payload | 6,210 lbs |
| Ford F-450 Pricing Starts At | $50,410 |
2021 6.7L Powerstroke Maintenance
If you’re going to own a 2021 Ford Super Duty with the 6.7L Powerstroke diesel V-8 engine, you better be aware of the required maintenance that these trucks require. To help prospective buyers, we’ve accumulated all of the most critical 2021 6.7L Powerstroke maintenance information. Down below, we’ll go over the required service intervals, fluid capacities, and even a list of the oil, fluids, and filters you’re going to need!
Service Intervals
2021 6.7L Powerstroke service intervals are going to depend significantly on how you use your vehicle. If you use your vehicle mostly for commuting and occasionally tow lighter loads, you should be just fine with the regular operating conditions service schedule. Your vehicle comes equipped with intelligent oil life monitoring, and it should reflect these driving habits. On the other hand, if you tow very heavy loads frequently, use your vehicle as part of a fleet or commercial vehicle, or if you idle excessively you will need to follow the severe operating conditions service schedule. This will help make sure your vehicle and its Powerstroke engine last as long as possible.
Monthly Maintenance Checklist
- Check Air Filter Restriction Gauge. Replace if needed.
- Take a look at engine oil level. Make sure engine oil stays in the recommended range.
- Check Tire Pressure in all tires, even the spare.
- Add windshield wiper fluid if needed.
- Check Fuel/Water separator and drain it if needed.
At Every Maintenance Interval, Also:
- Change Engine oil and oil filter.
- Drain Water/Fuel Separator.
- Refill your truck with DEF Fluid.
- Rotate the tires and inspect them for signs of wear.
- Inspect the air filter restriction gauge.
- Inspect Brake pads, shoes, rotors, drums, brake lines, hoses, and the parking brake.
- Inspect engine primary and secondary cooling systems coolant level and strength.
- Inspect exhaust system.
Regular Operating Conditions
| Service Tasks | Miles/KM or Period of Time |
| Replace Engine Oil & Oil Filter | 7,500-10,000 miles or as as displayed by Intelligent Oil Life Monitoring System (12,000-16,000 km) |
| Replace Fuel Filter(s) | 30,000 miles or 48,000 km |
| Drain Water/Fuel Separator | 7,500-10,000 miles or 12,000-16,000 km |
| Change the Cabin Air Filter | 20,000 miles or 32,000 km |
| Replace Engine Air Filter | 30,000 miles or 48,000 km |
| Replace Engine Air Inlet Foam Filter | 50,000 miles or 80,467 km |
| Inspect Drive Belts | 90,000 miles or 144,000 km |
| Replace Drive Belts | 150,000 miles or 240,000 km |
| Change Automatic Transmission Fluid And Filter | 150,000 miles or 240,000 km |
| Replace Front Wheel Bearing Grease & Grease Seal(2WD Models) | 60,000 miles or 96,000 km |
| Replace two front wheel bearings & Seals (2WD Models) | 150,000 miles or 240,000 km |
| Change Front & Rear Axle Fluid | 150,000 miles or 240,000 km |
| Drain & Re-Fill Transfer Case Fluid | 150,000 miles or 240,000 km |
| Change Primary and Secondary Cooling System Coolant | First Service at 200,000 miles or 320,000 km. After that, every 5 years or 100,000 miles. |
| Check Engine Coolant Level and Condition | 30,000 miles or 48,000 km |
| Change Brake Fluid | Every 3 years |
Severe Operating Conditions
| Service Tasks | Miles/KM or Period of Time |
| Replace Engine Oil & Oil Filter | 2,500-7,500 miles or as as displayed by Intelligent Oil Life Monitoring System (4,000-12,000 km) |
| Replace Fuel Filter(s) | 15,000 miles or 24,000 km |
| Drain Water/Fuel Separator | 2,500-7,500 miles or 4,000-12,000 km |
| Change the Cabin Air Filter | 20,000 miles or 32,000 km |
| Replace Engine Air Filter | 30,000 miles or 48,000 km |
| Replace Engine Air Inlet Foam Filter | 30,000 miles or 48,000 km |
| Inspect Drive Belts | 90,000 miles or 144,000 km |
| Replace Drive Belts | 150,000 miles or 240,000 km |
| Change Automatic Transmission Fluid And Filter | 150,000 miles or 240,000 km |
| Replace Front Wheel Bearing Grease & Grease Seal(2WD Models) | 30,000 miles or 48,000 km |
| Replace two front wheel bearings & Seals (2WD Models) | 150,000 miles or 240,000 km |
| Change Front & Rear Axle Fluid | 50,000 miles or 80,000 km |
| Drain & Re-Fill Transfer Case Fluid | 50,000 miles or 80,000 km |
| Change Primary and Secondary Cooling System Coolant | 60,000 miles or 96,000 km |
| Check Engine Coolant Level and Condition | 30,000 miles or 48,000 km |
| Change Brake Fluid | Every 3 years |
2021 6.7L Powerstroke Fluid Capacity
| Fluid Type | Quarts | Liters |
| Engine Oil /w Filter | 13 Quarts | 12.3 Liters |
| Cooling System (Primary Circuit) | 31.7 Quarts | 30 Liters |
| Cooling System (Secondary Circuit) | 8.1 Quarts | 7.7 Liters |
| Brake Fluid | Fill as Required | Fill as Required |
| Automatic Transmission | 18.1 Quarts | 17.1 Liters |
| Transfer Case | 1.9 Quarts | 1.8 Liters |
| Diesel Exhaust Fluid Pickup Cab & Chassis | See below 7.4 Gallons 7.2 Gallons | See below 28 Liters 27.3 Liters |
| Front Axle 4WD without Limited Slip 4WD with Limited Slip* | See Below 2.75 Quarts 2.75 Quarts | See Below 2.6 Liters 2.6 Liters |
| 10.5 Rear Axle With Electronic Locking Differential Without Electronic Locking Differential | See Below 3.3-3.5 Quarts 3.5-3.6 Quarts | See Below 3.1-3.3 Liters 3.3-3.4 Liters |
| 10.8 Rear Axle With Electronic Locking Differential Without Electronic Locking Differential | 3.6 Quarts | 3.42 Liters |
| 11.8 Rear Axle** | 3.78 Quarts | 3.58 Liters |
2021 6.7L Powerstroke Maintenance Parts, Oil, Fluids, and Filters
| Part, Oil, Fluid Name | Specification/Link to Purchase |
| Engine Oil | Motorcraft SAE 10W-30 Super Duty Diesel Motor Oil XO-10W30-QSD (Normal Conditions) Motorcraft SAE 5W-40 Super Duty Diesel Motor Oil XO-5W40-5Q3SD (Severe Conditions) |
| Engine Oil Filter | Motorcraft FL-2051-S |
| Brake Fluid | Motorcraft DOT 4LV High Performance Motor Brake Fluid PM-20 |
| Front Axle Fluid* | Motorcraft SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL |
| Rear Axle Fluid* 10.5 Axle 10.8 Axle 11.8 Axle * | See Below Motorcraft SAE 75W-85 XY-75W85-QL Motorcraft SAE 75W-140 XY-75W140-QL Motorcraft SAE 75W-140 XY-75W140-QL |
| Friction Modifier | Motorcraft XL-3 Friction Modifier Additive |
| Engine Coolant | Motorcraft Yellow Prediluted AntiFreeze/Coolant VC-13DL-G |
| Diesel Exhaust Fluid | Motorcraft Diesel Exhaust Fluid PM-27-GAL |
| Engine Air Filter | Motorcraft FA-1951 |
| Transfer Case Fluid | Motorcraft Mercon LV Automatic Transmission Fluid XT-10-QLVC |
| Engine Air Foam Pre-Filter | Motorcraft FA-1952 |
| Cabin Air Filter | Motorcraft FP-79 |
| Fuel Filter | Motorcraft FD-4631 |
| 10R140 Ten-Speed Auto Transmission Fluid | Motorcraft Mercon ULV Automatic Transmission Fluid XT-12-QULV |
| 10R140 Ten-Speed Auto Transmission Filter | Motorcraft FT-221 |
| Battery (2 Required) | BXT-65-750 |
| Windshield Wiper Blades | Motorcraft WW-2248 |
Want more Information?
I’ve covered most of the most important information about the latest 6.7L Powerstroke diesel lineup. If you don’t want a diesel powertrain 2021 Superduty, check out this guide instead. Check out some of our other articles about the 6.7L Powerstroke diesel by clicking on one of the bulleted links below. If you’re shopping around for a new diesel, check out our comprehensive 2021 Diesel Buyer’s Guide.
- 6.7L Powerstroke Specs
- Best 6.7L Powerstroke Performance Upgrades
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