FORD 2015 F-550 v.1 - Manual (Page 448)

Towing a trailer or using a car-top carrier
Inspect and lubricate U-joints. 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 5000 miles (8000
km)
Rotate tires * , inspect tires for wear and measure tread
depth.
Change engine oil and filter. Every 5000 miles (8000
km) or six months
Inspect and lubricate U-joints.
Replace front wheel bearing grease and grease seals if
non-sealed bearings are used. Every 30000 miles (48000
km)
Change transfer case fluid (Four-wheel drive vehicles). Every 60000 miles (96000
km)
Replace spark plugs.
* 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
Inspect brake system. Every 5000 miles (8000
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.
Inspect and lubricate U-joints. Every 5000 miles (8000
km) or six months
Change engine oil and filter. Every 5000 miles (8000
km), six months or 200
engine hours
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Super Duty (), enUSA
Scheduled Maintenance