User Manual - Page 562

For 2020 Super Duty F-350 XL.

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Other Maintenance Items
Replace the cabin air filter.Every 20,000 mi
(32,180 km)
Replace the engine air filter.Every 30,000 mi
(48,000 km)
Replace the front wheel bearing grease and grease seal, if
you use non-sealed bearings.
Every 60,000 mi
(96,000 km)
Replace the spark plugs.
Every 100,000 mi
(160,934 km)
Inspect the accessory drive belt or belts.
1
Every 100,000 mi
(160,934 km)
Change the automatic transmission fluid and filter on 6-speed
transmission. 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 you use non-
sealed bearings.
Change the axle(s) fluid. See exceptions.
Change the transfer case fluid, if applicable.
Change the engine coolant.
2
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).
Diesel Engine
Electronic Air Filter Maintenance
Minder
Diesel engines have an electronic air filter
maintenance minder that indicates the
status of the engine air filter. You can find
this information within the Vehicle
Maintenance menu, in the information
displays. One of three indications are
possible:
559
Super Duty (TFE), enUSA, Edition date: 201909, Third-Printing-
Scheduled Maintenance
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