Ford Super Duty (2018 year). Manual — part 146

When to Expect the Message Prompting You to Change Your Oil

Vehicle Use and Example

Miles (km)

Moderate to heavy load or towing.
Mountainous or off-road conditions.
Extended idling, 200-300 hours.
Extended hot or cold operation.

Extreme

2,500–5,000 mi

(4,000–8,000 km)

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 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 has accumulated the equivalent of
approximately 25 mi (40 km).

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

3

, inspect the tires for wear and measure tread depth.

Perform a multi-point inspection, recommended.

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

Inspect the automatic transmission fluid level. Consult dealer for requirements.

Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.

Inspect the engine and secondary cooling system coolant concentration freeze-point
protection, level and hoses.

Inspect the exhaust system and heat shields.

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 U-joints.
Lubricate any grease fittings.

1

Do not exceed one year or 10,000 mi (16,000 km) between service intervals.

2

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

3

Vehicles with dual rear wheels should rotate the front wheels when specified; rear wheels

only if unusual wear is noted.

Other maintenance items

1

Replace the cabin air filter.

Every 20,000 mi
(32,000 km)

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

Every 30,000 mi
(48,000 km)

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 air inlet foam filter.

Every 45,000 mi
(72,000 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.

2

At 90,000 mi (144,000 km)

Change the crankcase ventilation filter element if
equipped. Dual rear wheel and incomplete chassis
configurations only.

Every 100,000 mi
(160,000 km)

Change the engine and secondary cooling system coolant.

3

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.

Other maintenance items

1

Change axle(s) fluid. See exceptions.

Change transfer case fluid, if equipped.

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.

Note: When adding 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.

2

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).

3

Initial replacement is at six years or 105,000 mi (168,000 km), then every three years or

45,000 mi (72,000 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.

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)

Towing a Trailer or Using a Car-top Carrier

Rotate tires

1

, inspect tires for wear and measure tread

depth.

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

1

, inspect tires for wear and measure tread

depth.

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

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 engine
hours.