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2021 Ford F-350 Owners Manual - Scheduled Maintenance



Scheduled Maintenance

Carefully following the maintenance schedule helps protect against major repair expenses resulting from neglect or inadequate maintenance and may help to increase the value of your vehicle when you sell or trade it. Keep all receipts for completed maintenance with your vehicle.

We have established regular maintenance intervals for your vehicle based upon rigorous testing. It is important that you have your vehicle serviced at the proper times. These intervals serve two purposes; one is to maintain the reliability of your vehicle and the second is to keep your cost of owning your vehicle down.

It is your responsibility to have all scheduled maintenance performed and to make sure that the materials used meet the specifications identified in this owner's manual. See Capacities and Specifications (page 441).

Failure to perform scheduled maintenance invalidates warranty coverage on parts affected by the lack of maintenance.

Service technicians participate in extensive factory-sponsored certification training to help them become experts on the operation of your vehicle. Ask your dealership about the training and certification their technicians have received.

Dealerships stock our parts and our authorized branded re-manufactured replacement parts. These parts meet or exceed our specifications. Parts installed at your dealership carry a nationwide

24-month or unlimited mile (kilometer) parts and labor limited warranty.

If you do not use our authorized parts they may not meet our specifications and depending on the part, it could affect emissions compliance.

Many dealerships have extended evening and Saturday hours to make your service visit more convenient and they offer one stop shopping. They can perform any services that are required on your vehicle, from general maintenance to collision repairs.

Note: Not all dealers have extended hours or body shops. Please contact your dealer for details.

Maintenance is an investment that pays dividends in the form of improved reliability, durability and resale value. To maintain the proper performance of your vehicle and its emission control systems, make sure you have scheduled maintenance performed at the designated intervals.

Your vehicle comes with the Intelligent Oil-Life Monitor system, which displays a message in the information display at the proper oil change interval. This interval may be up to one year or 10,000 mi (16,000 km).

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When the oil change message appears in the information display, it is time for an oil change. Make sure you perform the oil change within two weeks or 500 mi

(800 km) of the message appearing. Make sure you reset the Intelligent Oil-Life Monitor after each oil change. See Oil Change Indicator Reset (page 356).

If your information display resets prematurely or becomes inoperative, you should perform the oil change interval at six months or 5,000 mi (8,000 km) from your last oil change. Never exceed one year or 10,000 mi (16,000 km) between oil change intervals.

You can drive high performance vehicles in such a way that may lead to higher oil consumption this includes extended time at high engine speeds, high loads, engine braking, hard cornering maneuvers, track and off-road usage. Under these conditions, oil consumption of approximately 1 quart per 500 miles (1 liter per 800 km) is possible. As a result, you need to check the engine oil level at every refueling and adjust to maintain proper levels to avoid engine damage.

Your vehicle is very sophisticated and built with multiple, complex, performance systems. Every manufacturer develops these systems using different specifications and performance features. That is why it is important to rely upon your dealership to properly diagnose and repair your vehicle.

We have recommended maintenance intervals for various parts and component systems based upon engineering testing. We rely upon this testing to determine the most appropriate mileage for replacement of oils and fluids to protect your vehicle at the lowest overall cost to you and recommends against maintenance schedules that deviate from the scheduled maintenance information.

We strongly recommend the use of only our genuine or our authorized

re-manufactured replacement parts engineered for your vehicle.

This owner's manual and our Workshop Manual list the recommended additives and chemicals for your vehicle. We do not recommend using chemicals or additives not approved by us as part of your vehicle’s normal maintenance. Please consult your warranty information.

In many cases, fluid discoloration is a normal operating characteristic and, by itself, does not necessarily indicate a concern or that the fluid needs to be changed. However, a qualified expert, such as the factory-trained technicians at your dealership, should inspect discolored fluids that also show signs of overheating or foreign material contamination immediately.

Make sure to change your vehicle’s oils and fluids at the specified intervals or in conjunction with a repair. Flushing is a viable way to change fluid for many vehicle sub-systems during scheduled maintenance. It is critical that systems are flushed only with new fluid that is the same as that required to fill and operate the system or using our approved flushing chemical.

Make sure you perform the following basic maintenance checks and inspections every month or at six-month intervals.

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Check Every Month

Air filter restriction gauge.1

Engine oil level.

Function of all interior and exterior lights.

Tires including the spare for wear and proper pressure.

Windshield washer fluid level.

Fuel and water separator. Drain if necessary or if indicated by the information display.1

Holes and slots in the tail pipe to make sure they are functional and clear of debris.1

1 Diesel vehicles only.

Check Every Six Months

Battery connections. Clean if necessary.

Body and door drain holes for obstructions. Clean if necessary.

Cooling system fluid level and coolant strength.

Door weatherstrips for wear. Lubricate if necessary.

Hinges, latches and outside locks for proper operation. Lubricate if necessary.

Parking brake for proper operation.

Safety belts and seat latches for wear and function.

Safety warning lamps, brake, ABS, airbag and safety belt for operation.

Washer spray and wiper operation. Clean or replace blades as necessary.

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In order to keep your vehicle running right, it is important to have the systems on your vehicle checked regularly. This can help identify potential issues and prevent major

problems. We recommend having the following multi-point inspection performed at every scheduled maintenance interval to help make sure your vehicle keeps running great.

Multi-Point Inspection

Accessory drive belt or belts

Hazard warning system operation

Battery performance

Horn operation

Engine air filter

Radiator, cooler, heater and air conditioning hoses

Exhaust system

Suspension components for leaks or damage

Exterior lamps operation

Steering and linkage

Fluid levels1; fill if necessary

Tires including the spare for wear and proper pressure2

For oil and fluid leaks

Windshield for cracks, chips or pits

Half-shaft dust boots

Washer spray and wiper operation

1 Brake, coolant recovery reservoir, automatic transmission and window washer

2If your vehicle is equipped with a temporary mobility kit, check the tire sealant expiration Use By date on the canister. Replace as needed.

Be sure to ask your dealership service advisor or technician about the multi-point vehicle inspection. It is a comprehensive way to perform a thorough inspection of your vehicle. Your checklist gives you immediate feedback on the overall condition of your vehicle.

Your vehicle has an Intelligent Oil-Life Monitor that determines when you should change the engine oil based on how you use your vehicle. By using several important factors in its calculations, the monitor helps reduce the cost of owning your vehicle and reduces environmental waste at the same time.

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This means you do not have to remember to change the oil on a mileage-based schedule. Your vehicle lets you know when an oil change is due by displaying a message in the information display.

The following table provides examples of vehicle use and its impact on oil change intervals. It is a guideline only. Actual oil change intervals depend on several factors and generally decrease with severity of use.

Note: Use the appropriate special operating condition for maintenance information when using high sulfur diesel fuels, operating your vehicle off-road or in dusty conditions, such as unpaved roads.

Note: For every hour that your vehicle idles, it accumulates the equivalent of approximately 25 mi (40 km).

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10,000 mi (16,000 km)/ 450 Engine Hours or 12 Months - Whichever Comes First

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 or drag.

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.

Inspect the front axle and U-joints. If applicable, lubricate the grease fittings. Four-wheel drive vehicles.

Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and the U- joints. If applicable, lubricate the grease fittings.

1 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.

2 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

Brake Fluid Maintenance1

Every three years

Change the brake fluid.2

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.

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Other Maintenance Items

Every 20,000 mi

(32,000 km)

Replace the cabin air filter.

Every 30,000 mi

(48,000 km)

Replace the engine air filter.

Every 60,000 mi

(96,000 km)

Replace the front wheel bearing grease and grease seal, if you use non-sealed bearings.

Every 100,000 mi

(160,000 km)

Replace the spark plugs.

Every 100,000 mi

(160,000 km)

Inspect the accessory drive belt or belts.1

Every 150,000 mi

(240,000 km)

Change the automatic transmission fluid and filter. Consult dealer for requirements.

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.

At 200,000 mi

(320,000 km)

Change the engine coolant.2

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 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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Engine Air Filter Status Message

Result

Filter OK

Indicates the engine air filter is performing as expected.

Check filter1

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.

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.

System fault

Indicates that there is an error within the electronic air filter maintenance minder system requiring service.

1 Reset the engine air filter information monitor after you replace the air filter.

At Every Oil Change Interval as Indicated by the Information Display1

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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At Every Oil Change Interval as Indicated by the Information Display1

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 Maintenance1

Every three years

Change the brake fluid.2

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 items1

Every 20,000 mi

(32,000 km)

Replace the cabin air filter.

Every 30,000 mi

(48,000 km)

Replace the engine air filter.2

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.

Every 50,000 mi

(80,000 km)

Replace the engine air inlet foam filter.

Every 60,000 mi

(96,000 km)

Replace the front wheel bearing grease and grease seal if using non-sealed bearings. Two-wheel drive vehicles.

At 90,000 mi

(144,000 km)

Inspect the accessory drive belt or belts.3

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Other Maintenance items1

Every 150,000 mi

(240,000 km)

Change the automatic transmission fluid and filter. Consult dealer for requirements.

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.

At 200,000 mi

(320,000 km)

Change the engine and secondary cooling system coolant.4

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).

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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Towing a Trailer or Using a Car-top Carrier

Inspect frequently, service as required

Inspect and lubricate the U-joints grease fittings - if applicable.

See the axle maintenance items under Exceptions.

Every 5,000 mi (8,000 km)

Inspect the wheels and related components for abnormal noise, wear, looseness or drag.

Rotate tires, inspect tires for wear and measure tread depth.1

Every 5,000 mi (8,000 km) or six months.

Change the engine oil and filter.

Inspect and lubricate the U-joints grease fittings. - if applicable.

Every 30,000 mi

(48,000 km)

Replace the front wheel bearing grease and grease seals if you use non-sealed bearings.

Every 60,000 mi

(96,000 km)

Change the transfer case fluid, four-wheel drive vehicles.

Replace the spark plugs.

1 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

Extensive Idling or Low-speed Driving for Long Distances, as in Heavy Commercial Use

- Such as Delivery, Taxi, Patrol Car or Livery

Inspect frequently, service as required

Replace the engine air filter.

Replace the cabin air filter.

Every 5,000 mi (8,000 km)

Inspect the brake system.

Inspect the wheels and related components for abnormal noise, wear, looseness or drag.

Lubricate the control arm and steering ball joints grease fittings - if applicable.

Rotate the tires, inspect tires for wear and measure the tread depth.1

Every 5,000 mi (8,000 km) or six months

Inspect and lubricate the U-joints grease fittings - if applicable.

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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

Every 5,000 mi (8,000 km) or six months or 200 engine hours.

Change the engine oil and filter.

Every 30,000 mi

(48,000 km)

Replace the front wheel bearing grease and grease seals if you use non-sealed bearings.

Every 60,000 mi

(96,000 km)

Replace the spark plugs.

1 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

Operating in Dusty or Sandy Conditions - Such as Unpaved or Dusty Roads

Inspect frequently, service as required

Replace engine air filter.

Replace cabin air filter.

Every 5,000 mi (8,000 km)

Inspect the wheels and related components for abnormal noise, wear, looseness or drag.

Rotate tires, inspect tires for wear and measure tread depth.1

Every 5,000 mi (8,000 km) or six months

Change engine oil and filter.

Inspect and lubricate U-joints if equipped with grease fittings.

Every 30,000 mi

(48,000 km)

Replace front wheel bearing grease and grease seals if non-sealed bearings are used.

1 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

Off-road operation

Inspect frequently, service as required

Inspect the steering linkage, ball joints and the U-joints, Lubricate grease fittings - if applicable.

Replace the engine air filter.

Every 5,000 mi (8,000 km) or six months

Change the engine oil and filter.

Replace the cabin air filter.

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Off-road operation

Inspect the wheels and related components for abnormal noise, wear, looseness or drag.

Rotate tires, inspect tires for wear and measure the tread depth.1

Every 30,000 mi

(48,000 km)

Replace front wheel bearing grease and grease seals if you use non-sealed bearings.

1 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

Exclusive use of E85 - Flex Fuel Vehicles Only

Every oil change interval

If ran exclusively on E85, fill the fuel tank full with regular unleaded fuel.

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

As required

Change the engine oil and filter as indicated by the information display, and perform the services listed in the scheduled maintenance chart.

See the axle maintenance items under Exceptions.

Every 15,000 mi

(24,000 km) or six months, 600 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

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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 you use your Vehicle for Stationary Operation

As required

Change the engine oil and filter as indicated by the information display, and perform the services listed in the scheduled maintenance chart.

Every 15,000 mi

(24,000 km), six months or 600 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

At 60,000 mi (96,000 km)

or 2400 engine hours

Flush and refill the coolant.

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 Low-speed Operation, Consistent Heavy Traffic Under 25 mph (40 km/h) or Long Rush-hour Traffic

As required

Change the engine oil and filter as indicated by the information display, and perform the services listed in the scheduled maintenance chart.

Every 15,000 mi

(24,000 km), six months or 600 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

At 60,000 mi (96,000 km)

or 2400 engine hours

Flush and refill the coolant.

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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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.

Operating in Sustained Ambient Temperatures Below -9°F (-23°C) or Above 100°F (38°C)

As required

Change the engine oil and filter as indicated by the information display, and perform the services listed in the scheduled maintenance chart.

Every 15,000 mi

(24,000 km), six months or 600 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

Every 30,000 mi

(48,000 km)

Replace the wheel bearing grease and grease seals if using non-sealed bearings. Two-wheel drive vehicles.

Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)

Every 7,500 mi (12,000 km)

Rotate the tires, inspect the tires for wear and measure tread depth.1

Inspect the brake system pads and rotors.

Inspect the air filter restriction gauge. Replace the air filter if necessary.2

Inspect the steering, suspension ball joints and the tie rods. Lubricate any grease fittings.

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Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)

Every 7,500 mi (12,000 km), six months or 300 engine hours

Change the engine oil and filter.3

Inspect and lubricate the U-joints.

Every 15,000 mi

(24,000 km), 6 months or

600 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

Every 30,000 mi

(48,000 km)

Replace the air inlet foam filter.

Replace the wheel bearing grease and grease seals if you use non-sealed bearings. Two-wheel drive vehicles.

1 Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

2 Reset the engine air filter information monitor after you replace the air filter.

3 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.

Off-road Operation

As required

Inspect the functional holes in each leg of the twin exhaust tips and the holes under the shield just inboard of the right rear tire to make sure they are clean and clear of debris or foreign materials. Refer to the Vehicle Care chapter of your owner’s manual for more information.

Inspect the steering, suspension ball joints and the tie rods. Lubricate any grease fittings.

Every 7,000 mi (12,000 km), six months or 300 engine hours

Rotate the tires, inspect the tires for wear and measure the tread depth.1

Inspect the brake system pads and rotors.

Inspect the air filter restriction gauge. Replace the air filter if necessary.2

Every 7,000 mi (12,000 km) or 300 engine hours

Change the engine oil and filter.3

Every 15,000 mi

(24,000 km), six months or 600 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

Every 30,000 mi

(48,000 km)

Replace the air inlet foam filter.

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Off-road Operation

Replace the wheel bearing grease and grease seals if you use non-sealed bearings. Two-wheel drive vehicles.

Every 50,000 mi

(80,000 km)

Change the rear axle fluid. Dana rear axles only - some F- 350s; all F-450s and F-550s.

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. Only rotate the rear wheels if you notice unusual wear.

2 Reset the engine air filter information monitor after you replace the air filter.

3 Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.

Using Biodiesel, up to and Including 20% Biodiesel (B20)

As required

Change the engine oil and filter as indicated by the information display, and perform the services listed in the scheduled maintenance chart.

Every 15,000 mi

(24,000 km), six months or 300 engine hours

Replace the engine-mounted and frame-mounted fuel filters.

Using Fuel Other Than Ultra-low Sulfur Diesel Fuel - Vehicles Operated Where Ultra-low Sulfur Diesel Fuel is not Required or Available

Every 2,500 mi (4,000 km) or three months (if using high sulfur fuel with more than 500 ppm sulfur)

Change the engine oil and filter.

Every 5,000 mi (8,000 km) or six months (if using high sulfur fuel with fewer than 500 ppm sulfur)

Change the engine oil and filter.

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Axle(s) and transfer case, 4X4 only, fluid changes or level checks are not required unless a leak is suspected or the assembly has been submerged in water. During long periods of trailer towing with outside temperatures above 70°F (21°C) or at wide-open throttle for long periods above 45 mph (72 km/h), change the rear axle fluid every 30,000 mi (48,000 km) if the rear axle is filled with non-synthetic fluid. This interval can be waived and the 150,000 mi (240,000 km) service interval can continue if the rear axle is filled with 75W140 synthetic gear fluid meeting Ford specification WSL-M2C192-A, part number XY-75W140-QL, or equivalent. Add friction modifier XL-3 (EST-M2C118-A) or equivalent for complete refill of

Traction-Lok rear axles. See Capacities

and Specifications (page 441).

Change the rear axle fluid every

250,000 mi (400,000 km) under normal driving conditions on all commercial applications. When you operate your vehicle at or near maximum gross vehicle weights, change the rear axle fluid every 60,000 mi (96,000 km). In addition,

follow this 60,000 mi (96,000 km) schedule when you operate your vehicle under the special operating conditions where noted.

If you register your vehicle in California, the California Air Resources Board has determined that the failure to perform this maintenance item does not nullify the emission warranty or limit recall liability before the completion of your vehicle's useful life. Ford Motor Company, however, urges you to have all recommended maintenance services performed at the specified intervals and to record all vehicle service.

Vehicles operating in the Middle East, North Africa, Sub-Saharan Africa or locations with similar climates using an American Petroleum Institute (API) Certified for Gasoline Engines (Certification mark) oil of SM or SN quality, the normal oil change interval is 3,000 mi (5,000 km).

If the available API SM or SN oils are not available, then the oil change interval is 2,000 mi (3,000 km).

The life of the engine air filter and cabin air filter is dependent on exposure to dusty and dirty conditions. Vehicles operated in these conditions require frequent inspection and replacement of the engine air filter and cabin air filter.

Over time, a slight amount of ash builds up in the diesel particulate filter, which is not removed during the regeneration process. The filter may need to be replaced with a new or remanufactured part at approximately 250,000 mi (400,000 km). Actual mileage varies depending on engine and vehicle operating conditions.

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In this case, the engine control system illuminates a service light , wrench icon, to inform you to bring your vehicle to the dealer for service. If there are any issues with the oxidation catalyst or particulate filter system, the engine control system illuminates a service light, wrench or engine icon to inform you to bring your vehicle into a dealer for service.

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