User Manual - Page 571

For 2020 Super Duty F-350 XL.

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Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Change the engine oil and filter.
3
Every 7,500 mi (12,000 km),
six months or 300 engine
hours
Inspect and lubricate the U-joints.
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), 6 months or
600 engine hours
Replace the air inlet foam filter.Every 30,000 mi
(48,000 km)
Replace the wheel bearing grease and grease seals if you
use non-sealed bearings. Two-wheel drive vehicles.
1
Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate
the rear wheels if you notice unusual wear.
2
Reset the engine air filter information monitor after you replace the air filter.
3
Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.
Off-road Operation
Inspect the functional holes in each leg of the twin exhaust
tips and the holes under the shield just inboard of the right
rear tire to make sure they are clean and clear of debris or
foreign materials. Refer to the Vehicle Care chapter of your
owners manual for more information.
As required
Inspect the steering, suspension ball joints and the tie rods.
Lubricate any grease fittings.
Rotate the tires, inspect the tires for wear and measure
the tread depth.
1
Every 7,000 mi (12,000 km),
six months or 300 engine
hours
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the air filter
if necessary.
2
Change the engine oil and filter.
3
Every 7,000 mi (12,000 km)
or 300 engine hours
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), six months or
600 engine hours
Replace the air inlet foam filter.Every 30,000 mi
(48,000 km)
568
Super Duty (TFE), enUSA, Edition date: 201909, Third-Printing-
Scheduled Maintenance
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