2021 FORD SUPER DUTY engine

Other Maintenance Items
Replace the cabin air filter.
Every 20,000 mi
(32,180 km)
Replace the engine air filter.
Every
30,000 mi
(48,000 km)
Replace the front wheel bearing grease and grease seal, if
you use non-sealed bearings.
Every
60,000 mi
(96,000 km)
Replace the spark plugs.
Every
100,000 mi
(160,934 km)
Inspect the accessory drive belt or belts. 1
Every
100,000 mi
(160,934 km)
Change the automatic transmission fluid and filter on 6-speed
transmission. Consult dealer for requirements.
Every
150,000 mi
(240,000 km) Replace the accessory drive belt or belts if not replaced within
the last 100,000 mi (160,000 km).
Replace the front wheel bearings and seals if you use non-
sealed bearings.
Change the axle(s) fluid. See exceptions.
Change the transfer case fluid, if applicable.
Change the engine coolant. 2
At
200,000 mi
(320,000 km)
1 If not replaced, inspect the belt or belts every
15,000 mi (24,000 km).
2 Initial replacement at 10 years or 200,000 mi (320,000 km), then every 5 years or
100,000 mi (160,000 km).
Diesel Engine
Electronic Air Filter Maintenance
Minder
Diesel engines have an electronic air filter
maintenance minder that indicates the
status of the engine air filter. You can find
this information within the Vehicle
Maintenance menu, in the information
displays. One of three indications are
possible:
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Result
Engine Air Filter Status
Message
Indicates the engine air filter is performing as expected.
Filter OK
Indicates that there is a higher than expected restriction
across the engine air filter, which could represent an air filter at full useful life or a filter with an obstruction.
Check filter
1
When this displays, inspect the engine air filter and replace if necessary.
After the inspection or engine air filter replacement, you must reset the system in order to change the status from Check Filter to Filter OK.
Indicates that there is an error within the electronic air filter maintenance minder system requiring service.
System fault
1 Reset the engine air filter information monitor after you replace the air filter.
Normal Maintenance Intervals At Every Oil Change Interval as Indicated by the Information Display
1
Change the engine oil and filter. 2
Fuel and water separator. Drain if necessary or if indicated by the information display.
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.
Inspect the engine and secondary cooling system coolant concentration freeze-point
protection, level and the hoses.
Inspect the exhaust system and heat shields.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

At Every Oil Change Interval as Indicated by the Information Display
1
Inspect the front axle and U-joints. Lubricate any grease fittings. Four-wheel drive
vehicles.
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and the U-
joints. Lubricate any grease fittings.
1 Do not exceed one year/10,000 mi (16,000 km) or 350 engine hours between service
intervals.
2 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.
3 Reset the engine air filter information monitor after you replace the air filter.
4 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate
the rear wheels if you notice unusual wear. Brake Fluid Maintenance
1
Change the brake fluid. 2
Every three years
1 Perform this maintenance item every three years. Do not exceed the designated time
for the interval.
2 Brake fluid servicing requires special equipment available at your authorized dealer. Other Maintenance items
1
Replace the cabin air filter.
Every
20,000 mi
(32,000 km)
Replace the engine air filter. 2
Every
30,000 mi
(48,000 km) Replace the engine-mounted and frame-mounted fuel filters.
Inspect the engine and secondary cooling system coolant
concentration freeze-point protection, additive corrosion
inhibitor strength, coolant level, and hoses. Add coolant
additive if necessary.
Replace the engine air inlet foam filter.
Every
50,000 mi
(80,467 km)
Replace the front wheel bearing grease and grease seal if
using non-sealed bearings. Two-wheel drive vehicles.
Every
60,000 mi
(96,000 km)
Inspect the accessory drive belt or belts. 3
At
90,000 mi
(144,000 km)
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Other Maintenance items
1
Change the automatic transmission fluid and filter. Consult
dealer for requirements.
Every 150,000 mi
(240,000 km) Replace the accessory drive belt or belts if not replaced
within the last 100,000 mi (160,000 km)
Replace the front wheel bearings and seals if using non-
sealed bearings. Two-wheel drive vehicles.
Change the axle(s) fluid. See exceptions.
Change the transfer case fluid, if equipped.
Change the engine and secondary cooling system coolant. 4
At
200,000 mi
(320,000 km)
1 You can perform these maintenance items within
3,000 mi (4,800 km) of the last oil
change. Do not exceed the designated distance for the interval.
2 Reset the engine air filter information monitor after you replace the air filter.
3 Perform follow-up inspections every 15,000 mi (24,000 km) after the initial inspection.
Replace the belt or belts at
150,000 mi (240,000 km).
4 Initial replacement at 10 years or 200,000 mi (320,000 km), then every 5 years or
100,000 mi (160,000 km).
SPECIAL OPERATING
CONDITIONS SCHEDULED
MAINTENANCE
Gasoline Engine
If you operate your vehicle primarily in any
of the following conditions, you need to
perform extra maintenance as indicated.
If you operate your vehicle occasionally
under any of these conditions, it is not
necessary to perform the extra
maintenance. For specific
recommendations, see your dealership
service advisor or technician.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Towing a Trailer or Using a Car-top Carrier
Inspect and lubricate U-joints if equipped with grease
fittings.
Inspect frequently, service
as required
See axle maintenance items under Exceptions.
Inspect the wheels and related components for abnormal
noise, 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 months. Inspect and lubricate U-joints if equipped with grease
fittings.
Replace front wheel bearing grease and grease seals if
non-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 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only 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)
Replace engine air filter.
Inspect frequently, service
as required
Replace cabin air filter.
Inspect brake system.
Every
5,000 mi (8,000 km)
Inspect wheels and related components for abnormal
noise, wear, looseness or drag.
Lubricate control arm and steering ball joints if equipped
with grease fittings.
Rotate tires, inspect tires for wear and measure tread
depth.1
Inspect and lubricate U-joints if equipped with grease
fittings.
Every
5,000 mi (8,000 km)
or six months
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use
(Such as Delivery, Taxi, Patrol Car or Livery)
Change engine oil and filter.
Every 5,000 mi (8,000 km)
or six months or 200 engine
hours.
Replace front wheel bearing grease and grease seals if
non-sealed bearings are used.
Every
30,000 mi
(48,000 km)
Replace spark plugs.
Every
60,000 mi
(96,000 km)
1 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Replace engine air filter.
Inspect frequently, service
as required
Replace cabin air filter.
Inspect the wheels and related components for abnormal
noise, 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 months Inspect and lubricate U-joints if equipped with grease
fittings.
Replace front wheel bearing grease and grease seals if
non-sealed bearings are used.
Every
30,000 mi
(48,000 km)
1 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Off-road operation
Inspect steering linkage, ball joints and U-joints, Lubricate
if equipped with grease fittings.
Inspect frequently, service
as required
Replace engine air filter.
Change engine oil and filter.
Every
5,000 mi (8,000 km)
or six months Replace cabin air filter.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Off-road operation
Inspect the wheels and related components for abnormal
noise, wear, looseness or drag.
Rotate tires, inspect tires for wear and measure tread
depth. 1
Replace front wheel bearing grease and grease seals if
non-sealed bearings are used.
Every 30,000 mi
(48,000 km)
1 Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels
only if unusual wear is noted. Exclusive use of E85 (Flex Fuel Vehicles Only)
If ran exclusively on E85, fill the fuel tank full with regular
unleaded fuel.
Every oil change interval
Diesel Engine
If you operate your vehicle primarily in any
of the following conditions, you need to
perform extra maintenance as indicated.
If you operate your vehicle occasionally
under any of these conditions, it is not
necessary to perform the extra
maintenance. For specific
recommendations, see your dealership
service advisor or technician. Towing a Trailer or Using a Car-top Carrier
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
See the axle maintenance items under
Exceptions.
Replace the engine-mounted and frame-mounted fuel
filters.
Every
15,000 mi
(24,000 km) or six months,
600 engine hours
Replace the wheel bearing grease and grease seals if using
non-sealed bearings. (Two-wheel drive vehicles)
Every
30,000 mi
(48,000 km)
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Towing a Trailer or Using a Car-top Carrier
Inspect the engine and secondary cooling system coolant
concentration (freeze-point protection) and additive
(corrosion inhibitor) strength. If your vehicle has orange-
colored coolant, add coolant additive if necessary.
Every 30,000 mi
(48,000 km) or 1200 engine
hours
Flush and refill the coolant. Do not add coolant additive.
Every
60,000 mi
(96,000 km) or 2400
engine hours
Note: If your vehicle has orange-colored coolant and you add coolant additive, do not
exceed the specified maximum of
50 fl oz (1.4 L) for the engine and 20 fl oz (473 ml) for
the secondary cooling system. Operating the engine with excessive coolant additive may
cause overheating which could lead to severe, permanent engine damage.
Note: After the initial coolant flush and fill at
60,000 mi (96,000 km) or 2400 engine
hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter. Frequent or Extended Idling (Over 10 Minutes Per Hour of Normal Driving) or Frequent
Low-speed Operation if your Vehicle is Used for Stationary Operation
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every
15,000 mi
(24,000 km), six months or
600 engine hours
Inspect the engine and secondary cooling system coolant
concentration (freeze-point protection) and additive
(corrosion inhibitor) strength. If your vehicle has orange-
colored coolant, add coolant additive if necessary.
Every
30,000 mi
(48,000 km) or 1200 engine
hours
Flush and refill the coolant. Do not add coolant additive.
Every
60,000 mi
(96,000 km) or 2400
engine hours
Note: If your vehicle has orange-colored coolant and you add coolant additive, do not
exceed the specified maximum of
50 fl oz (1.4 L) for the engine and 20 fl oz (473 ml) for
the secondary cooling system. Operating the engine with excessive coolant additive may
cause overheating which could lead to severe, permanent engine damage.
Note: After the initial coolant flush and fill at
60,000 mi (96,000 km) or 2400 engine
hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance