User Manual - Page 570

For 2020 Super Duty F-350 LARIAT.

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Sustained High-speed Driving at Gross Vehicle Weight Rating - Maximum Loaded Weight
for Vehicle Operation
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), six months or
600 engine hours
Replace the wheel bearing grease and grease seals if you
use non-sealed bearings. Two-wheel drive vehicles.
Every 30,000 mi
(48,000 km)
Flush and refill the coolant. Do not add coolant additive.Every 60,000 mi
(96,000 km) or 2400
engine hours
Note: After the initial coolant flush and fill at 60,000 mi (96,000 km) or 2400 engine
hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter.
Operating in Sustained Ambient Temperatures Below -9°F (-23°C) or Above 100°F (38°C)
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), six months or
600 engine hours
Replace the wheel bearing grease and grease seals if using
non-sealed bearings. (Two-wheel drive vehicles)
Every 30,000 mi
(48,000 km)
Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Rotate the tires, inspect the tires for wear and measure
tread depth.
1
Every 7,500 mi (12,000 km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the air filter
if necessary.
2
Inspect the steering, suspension ball joints and the tie rods.
Lubricate any grease fittings.
567
Super Duty (TFE), enUSA, Edition date: 201909, Third-Printing-
Scheduled Maintenance
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