Special Operating Conditions Scheduled Maintenance - Diesel - Ford SUPER DUTY 2023 Owner's Manual

At 200,000 mi
(320,000 km)
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).
SPECIAL OPERATING
CONDITIONS SCHEDULED
MAINTENANCE - DIESEL
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.
As required
Every 15,000 mi
(24,000 km) or six months,
600 engine hours
Every 30,000 mi
(48,000 km)
2023 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202211, DOM
Scheduled Maintenance
Other Maintenance Items
Change the transfer case fluid, if applicable.
Change the engine coolant.
Towing a Trailer or Using a Car-top Carrier
Change the engine oil and filter as indicated by the instru-
ment cluster display, and perform the services listed in the
scheduled maintenance chart.
See the axle maintenance items under Exceptions.
Replace the engine-mounted and frame-mounted fuel
filters.
Replace the wheel bearing grease and grease seals if using
non-sealed bearings. (Two-wheel drive vehicles)
603
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