
Note:If you use your vehicle regularly abovethe altitude of 5,000 ft (1,524 m) and underthe temperature of -4.0°F (-20°C), it isrecommended to use the alternative engineoil.
ENGINE OIL CAPACITY AND
SPECIFICATION - 7.3L,
GASOLINE
Use oil that meets the definedspecification and viscosity grade.
If you do not use oil that meets the definedspecification and viscosity grade, it couldresult in:
•Component damage that your vehiclewarranty does not cover.
•Longer engine cranking periods.
•Increased emission levels.
•Reduced vehicle performance.
•Reduced fuel economy.
An oil that displays this symbol conformsto current engine, emission system andfuel economy performance standards ofILSAC.
We recommend Motorcraft motor oil foryour vehicle. If Motorcraft oil is notavailable, use motor oils of therecommended viscosity grade that displaythe API Certification Mark for gasolineengines.
Do not use supplemental engine oiladditives because they are unnecessaryand could lead to engine damage that yourvehicle warranty does not cover.
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Note:If you use your vehicle regularly abovethe altitude of 5,000 ft (1,524 m) and underthe temperature of -4.0°F (-20°C), it isrecommended to use the alternative engineoil.
COOLING SYSTEM CAPACITY
AND SPECIFICATION - 6.7L
DIESEL
Use coolant that meets the definedspecification.
If you do not use coolant that meets thedefined specification, it could result in:
•Component damage that your vehiclewarranty does not cover.
•Reduced vehicle performance.
Note:An engine block heater isrecommended at temperatures below-9°F(-23°C).
Capacities
QuantityVariant
31.7 qt (30 L)Primary cooling system.
33.3 qt (31.5 L)Primary cooling system with auxiliary radi-ator.
8.2 qt (7.8 L)Secondary cooling system with ureainjector cooling.
10.0 qt (9.5 L)Secondary cooling system with ureainjector cooling and cooled compressor.
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When to Expect the Message Prompting You to Change Your Oil
Vehicle Use and Examplemi (km)
Minimal idle time.
Normal
7,500–10,000 mi(12,000–16,000 km)
Normal commuting with highway driving.No, or moderate, load or towing.Flat to moderately hilly roads.No extended idling.
Severe
Less than 7,500 mi(12,000 km)
Moderate to heavy load or towing.Mountainous or off-road conditions.Extended idling, 200-300 hours.Extended hot or cold operation.Maximum load or towing.Extreme hot or cold operation.Use of high sulfur diesel fuel.
Note:Use the appropriate special operating condition for maintenance information whenusing high sulfur diesel fuels, operating your vehicle off-road or in dusty conditions, such asunpaved roads.
Note:For every hour that your vehicle idles, it accumulates the equivalent of approximately25 mi (40 km).
Normal Maintenance Intervals
At Every Oil Change Interval as Indicated by the Instrument Cluster Display1
Change the engine oil and filter.2
Fuel and water separator. Drain if necessary or if indicated by the instrument clusterdisplay.
Refill the diesel exhaust fluid tank.
Rotate the tires, inspect the tires for wear and measure the tread depth.4
Perform a multi-point inspection, recommended.
Inspect the air filter restriction gauge. Replace the air filter if necessary.3
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and the parking brake.
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When to Expect the Message Prompting You to Change Your Oil
Vehicle Use and Examplemi (km)
Normal
7,500–10,000 mi(12,000–16,000 km)
Normal commuting with highway driving.No, or moderate, load or towing.Flat to moderately hilly roads.No extended idling.
Severe
5,000–7,500 mi(8,000–12,000 km)
Moderate to heavy load or towing.Mountainous or off-road conditions.Extended idling, 200-300 hours.Extended hot or cold operation.
Extreme2,500–5,000 mi(4,000–8,000 km)Maximum load or towing.Extreme hot or cold operation.
Note:For every hour that your vehicle idles, it accumulates the equivalent of approximately25 mi (40 km).
Normal Maintenance Intervals
At Every Oil Change Interval as Indicated by the Instrument Cluster Display
Change the engine oil and filter.1
Rotate the tires, inspect tire wear and measure the tread depth.2
Inspect the wheels and related components for abnormal noise, wear, looseness ordrag.
Perform multi-point inspection - recommended.
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and the parking brake.
Inspect the engine coolant concentration, freeze-point protection, level and the hoses.
Inspect the exhaust system and heat shields.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMScheduled Maintenance

California Fuel Filter Replacement
If you register your vehicle in California, theCalifornia Air Resources Board hasdetermined that the failure to perform thismaintenance item does not nullify theemission warranty or limit recall liabilitybefore the completion of your vehicle'suseful life. Ford Motor Company, however,urges you to have all recommendedmaintenance services performed at thespecified intervals and to record all vehicleservice.
Hot Climate Oil Change Intervals
Vehicles operating in the Middle East,North Africa, Sub-Saharan Africa orlocations with similar climates using anAmerican Petroleum Institute (API)Certified for Gasoline Engines (Certificationmark) oil of SM or SN quality, the normaloil change interval is 3,000 mi (5,000 km).
If the available API SM or SN oils are notavailable, then the oil change interval is2,000 mi (3,000 km).
Engine Air Filter and Cabin Air FilterReplacement
The life of the engine air filter and cabin airfilter is dependent on exposure to dustyand dirty conditions. Vehicles operated inthese conditions require frequentinspection and replacement of the engineair filter and cabin air filter.
Diesel Particulate Filter
Over time, a slight amount of ash buildsup in the diesel particulate filter, which isnot removed during the regenerationprocess. The filter may need to be replacedwith a new or remanufactured part atapproximately 250,000 mi (400,000 km).Actual mileage varies depending on engineand vehicle operating conditions.
In this case, the engine control system setsa service light (wrench icon) to inform youto bring your vehicle to the dealer forservice. If there are any issues with theoxidation catalyst or particulate filtersystem, a service light (wrench or engineicon) sets by the engine control system toinform you to bring your vehicle into adealer for service.
SPECIAL OPERATING
CONDITIONS SCHEDULED
MAINTENANCE - GASOLINE
If you operate your vehicle primarily in anyof the following conditions, you need toperform extra maintenance as indicated.If you operate your vehicle occasionallyunder any of these conditions, it is notnecessary to perform the extramaintenance. For specificrecommendations, see your dealershipservice advisor or technician.
Towing a Trailer or Using a Car-top Carrier
Inspect and lubricate U-joints if equipped with greasefittings.Inspect frequently, serviceas required
See axle maintenance items under Exceptions.
Inspect the wheels and related components for abnormalnoise, wear, looseness or drag.Every 5,000 mi (8,000 km)
Rotate tires, inspect tires for wear and measure tread
depth.1
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Off-road operation
Inspect the wheels and related components for abnormalnoise, wear, looseness or drag.
Rotate tires, inspect tires for wear and measure tread
depth.1
Replace front wheel bearing grease and grease seals ifnon-sealed bearings are used.Every 30,000 mi(48,000 km)
1 Rotate the front wheels on vehicles with dual rear wheels when specified. Rotate therear wheels if unusual wear is noted.
Exclusive use of E85 (Flex Fuel Vehicles Only)
If ran exclusively on E85, fill the fuel tank full with regularunleaded fuel.Every oil change interval
Exceptions
Axle and Transfer Case Maintenance
Axle(s) and transfer case (4X4 only) fluidchanges or level checks are not requiredunless a leak is suspected or the assemblyhas been submerged in water. During longperiods of trailer towing with outsidetemperatures above 70°F (21°C) or atwide-open throttle for long periods above45 mph (72 km/h), change the rear axlefluid every 30,000 mi (48,000 km) if therear axle is filled with non-synthetic fluid.This interval can be waived and the150,000 mi (240,000 km) service intervalcan continue if the rear axle is filled with75W140 synthetic gear fluid meeting Fordspecification WSL-M2C192-A, part numberXY-75W140-QL, or equivalent. Add frictionmodifier XL-3 (EST-M2C118-A) orequivalent for complete refill ofTraction-Lok rear axles. See Capacitiesand Specifications (page 520).
Additional Axle Maintenance for DualRear Wheels
Change rear axle fluid every 250,000 mi(400,000 km) under normal drivingconditions on all commercial applications.When operating your vehicle at or nearmaximum gross vehicle weights, changethe rear axle fluid every 60,000 mi(96,000 km). In addition, follow this60,000 mi (96,000 km) schedule whenoperating your vehicle under the specialoperating conditions where noted.
California Fuel Filter Replacement
If you register your vehicle in California, theCalifornia Air Resources Board hasdetermined that the failure to perform thismaintenance item does not nullify theemission warranty or limit recall liabilitybefore the completion of your vehicle'suseful life. Ford Motor Company, however,urges you to have all recommendedmaintenance services performed at thespecified intervals and to record all vehicleservice.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMScheduled Maintenance

Hot Climate Oil Change Intervals
Vehicles operating in the Middle East,North Africa, Sub-Saharan Africa orlocations with similar climates using anAmerican Petroleum Institute (API)Certified for Gasoline Engines (Certificationmark) oil of SM or SN quality, the normaloil change interval is 3,000 mi (5,000 km).
If the available API SM or SN oils are notavailable, then the oil change interval is2,000 mi (3,000 km).
Engine Air Filter and Cabin Air FilterReplacement
The life of the engine air filter and cabin airfilter is dependent on exposure to dustyand dirty conditions. Vehicles operated inthese conditions require frequentinspection and replacement of the engineair filter and cabin air filter.
SCHEDULED MAINTENANCE
RECORD
After the scheduled maintenance servicesare performed, record the Repair Order #,Distance and Engine Hours in the boxesprovided.
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2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOMScheduled MaintenanceE146852RepairOrder#:Distance:Enginehours(optional):Multi-pointinspection(recommended):Signature:Dealerstamp