F-450 2017 User Manual

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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)

Lubricate control arm and steering ball joints if equipped

with grease fittings.

Rotate tires

, inspect tires for wear and measure tread

depth.

Inspect and lubricate U-joints if equipped with grease

fittings.

Every 5000 miles (8000

km) or six months

Change engine oil and filter.Every 5000 miles (8000

km), six months or 200

engine hours

Replace front wheel bearing grease and grease seals if

non-sealed bearings are used.

Every 30000 miles (48000

km)

Replace spark plugs.Every 60000 miles (96000

km)

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

Inspect the wheels and related components for abnormal

noise, wear, looseness or drag.