2023 FORD SUPER DUTY Owners Manual

Operating in Sustained Ambient Temperatures Below -9°F (-23°C) or Above 100°F (38°C)
Change the engine oil and filter as indicated by the instru-ment cluster display, and perform the services listed in thescheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuelfilters.Every 15,000 mi(24,000 km), six months or600 engine hours
Replace the wheel bearing grease and grease seals if usingnon-sealed bearings. (Two-wheel drive vehicles)Every 30,000 mi(48,000 km)
Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Rotate the tires, inspect the tires for wear and measure
tread depth.1Every 7,500 mi (12,000 km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter ifnecessary.
Inspect the steering and suspension ball joints and tie rods.Lubricate any grease fittings.
Change the engine oil and filter.2Every 7,500 mi (12,000 km),six months or 300 enginehoursInspect and lubricate the U-joints.
Replace the engine-mounted and frame-mounted fuelfilters.Every 15,000 mi(24,000 km), 6 months or600 engine hours
Replace the air inlet foam filter.Every 30,000 mi(48,000 km)Replace the wheel bearing grease and grease seals if usingnon-sealed bearings. (Two-wheel drive vehicles)
1 Rotate the front wheels on vehicles with dual rear wheels when specified. Rotate therear wheels if unusual wear is noted.2 Reset the Oil Change Reminder after engine oil and filter changes.
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Off-road Operation
Inspect functional holes in each leg of the twin exhausttips and the holes under the shield just inboard of the rightrear tire to make sure they are clean and clear of debris orforeign materials. Refer to the Vehicle Care chapter of yourowner’s manual for more information.
As required
Inspect the steering and suspension ball joints and tie rods.Lubricate any grease fittings.
Rotate the tires, inspect the tires for wear and measure
tread depth.1Every 7,500 mi (12,000 km),six months or 300 enginehours
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter ifnecessary.
Change the engine oil and filter.2Every 7,500 mi (12,000 km)or 300 engine hours
Replace the engine-mounted and frame-mounted fuelfilters.Every 15,000 mi(24,000 km), six months or600 engine hours
Replace the air inlet foam filter.Every 30,000 mi(48,000 km)Replace the wheel bearing grease and grease seals if usingnon-sealed bearings. (Two-wheel drive vehicles).
Change the rear axle fluid (Dana rear axles only - some F-350s; all F-450s and F-550s).Every 50,000 mi(80,000 km)
Change the transfer case fluid. (Four-wheel drive vehicles)
Inspect the front axle fluid. (Four-wheel drive vehicles)
1 Rotate the front wheels on vehicles with dual rear wheels when specified. Rotate therear wheels if unusual wear is noted.2 Reset the Oil Change Reminder after engine oil and filter changes.
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Using Biodiesel, up to and Including 20% Biodiesel (B20)
Change the engine oil and filter as indicated by the instru-ment cluster display, and perform the services listed in thescheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuelfilters.Every 15,000 mi(24,000 km), six months or300 engine hours
Using Fuel Other Than Ultra-low Sulfur Diesel Fuel - Vehicles Operated Where Ultra-lowSulfur Diesel Fuel is not Required or Available
Change engine oil and filter.Every 2,500 mi (4,000 km)or three months (if usinghigh sulfur fuel with morethan 500 ppm sulfur)
Change engine oil and filter.Every 5,000 mi (8,000 km)or six months (if using highsulfur fuel with fewer than500 ppm sulfur)
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 Ford
specification WSL-M2C192-A, part numberXY-75W140-QL, or equivalent. Add frictionmodifier XL-3 (EST-M2C118-A) orequivalent for a 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.
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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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Towing a Trailer or Using a Car-top Carrier
Change engine oil and filter.Every 5,000 mi (8,000 km)or six months.Inspect and lubricate U-joints if equipped with greasefittings.
Replace front wheel bearing grease and grease seals ifnon-sealed bearings are used.Every 30,000 mi(48,000 km)
Change transfer case fluid (Four-wheel drive vehicles).Every 60,000 mi(96,000 km)Replace spark plugs.
1 Rotate the front wheels on vehicles with dual rear wheels when specified. Rotate therear wheels if unusual wear is noted.
Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use(Such as Delivery, Taxi, Patrol Car or Livery)Short Trips that do not allow the engine to get to operating temperature causing fueldilution and an increase of the engine oil level
Replace engine air filter.Inspect frequently, serviceas requiredReplace cabin air filter.
Inspect brake system.Every 5,000 mi (8,000 km)
Inspect wheels and related components for abnormalnoise, wear, looseness or drag.
Lubricate control arm and steering ball joints if equippedwith grease fittings.
Rotate tires, inspect tires for wear and measure tread
depth.1
Inspect and lubricate U-joints if equipped with greasefittings.Every 5,000 mi (8,000 km)or six months
Change engine oil and filter.Every 5,000 mi (8,000 km)or six months or 200 enginehours.
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Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use(Such as Delivery, Taxi, Patrol Car or Livery)Short Trips that do not allow the engine to get to operating temperature causing fueldilution and an increase of the engine oil level
Replace front wheel bearing grease and grease seals ifnon-sealed bearings are used.Every 30,000 mi(48,000 km)
Replace spark plugs.Every 60,000 mi(96,000 km)
1 Rotate the front wheels on vehicles with dual rear wheels when specified. Rotate therear wheels if unusual wear is noted.
Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Replace engine air filter.Inspect frequently, serviceas requiredReplace cabin air filter.
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
Change engine oil and filter.Every 5,000 mi (8,000 km)or six monthsInspect and lubricate U-joints if equipped with greasefittings.
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.
Off-road operation
Inspect steering linkage, ball joints and U-joints, Lubricateif equipped with grease fittings.Inspect frequently, serviceas required
Replace engine air filter.
Change engine oil and filter.Every 5,000 mi (8,000 km)or six monthsReplace cabin air filter.
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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