Ford Super Duty (2018 year). Manual — part 147

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

(Such as Delivery, Taxi, Patrol Car or Livery)

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

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)

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.

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

Off-road operation

Rotate tires

1

, inspect tires for wear and measure tread

depth.

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)

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. 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: 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.

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. 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: 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.

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

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. 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: 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.

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.

Sustained High-speed Driving at Gross Vehicle Weight Rating (Maximum Loaded Weight

for Vehicle 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

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

Every 30,000 mi
(48,000 km)