
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
Inspect the coolant concentration, freeze-point protection
and additive, corrosion inhibitor strength. Add coolant
additive if necessary.
Every
30,000 mi
(48,000 km) or 1200 engine
hours
Flush and refill the coolant. Do not add coolant additive.
Every
60,000 mi
(96,000 km) or 2400
engine hours
Note: When adding coolant additive, do not exceed the specified maximum of
47 fl oz
(1.4 L) for the engine and 20 fl oz (473 ml) for the secondary cooling system. Operating the
engine with excessive coolant additive may cause overheating which could lead to severe,
permanent engine damage.
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 -9.4°F (-23°C) or Above 100.3°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 Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Rotate the tires1
, inspect the tires for wear and measure
tread depth.
Every
7,500 mi (12,000 km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
337
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Scheduled Maintenance

Cleaning the Engine.....................................231
Cleaning the Exterior..................................229
Cleaning the Headlamps................................ 230
Exterior Chrome Parts..................................... 230
Exterior Plastic Parts........................................ 230
Stripes or Graphics........................................... 230
Underbody........................................................... 230
Under Hood......................................................... 230
Cleaning the Instrument Panel and Instrument Cluster Lens.........................232
Cleaning the Interior....................................232 Mirrors..................................................................... 232
Cleaning the Wheels..................................233
Cleaning the Windows and Wiper Blades
............................................................231
Climate Control...............................................72
Cold Weather Precautions.........................151 Winter Operating Tips for Arctic Operation
-20°F (-29°C) and Below.......................... 152
Coolant Check See: Engine Coolant Check - 6.7L
Diesel................................................................. 196
See: Engine Coolant Check - 6.8L..............200
Cruise Control
..................................................47
Principle of Operation....................................... 138
Cruise control See: Using Cruise Control................................ 138
Customer Assistance
.................................160
D
Data Recording
.................................................13
Service Data Recording....................................... 13
Daytime Running Lamps............................50
Diesel Particulate Filter
..............................109
Oxidation Catalytic Converter and Diesel
Particulate Filter System............................. 110
Direction Indicators
........................................51
Doors and Locks.............................................42
Draining the Fuel Filter Water Trap - 6.7L Diesel.............................................................207
Draining the Diesel Fuel Conditioner Module (DFCM)............................................................. 207
Driving Aids
.....................................................140
Driving Hints...................................................149
Driving Through Water................................153
Operation in Standing Water......................... 153DRL
See: Daytime Running Lamps......................... 50
E
Economical Driving
......................................150
Electrical System Inspection....................221 Accessory Feed Connections......................... 221
Electromagnetic Compatibility
...............351
Electronic Locking Differential................120 Activating the Locking Differential................121
Driver-Controlled Locking
Differential....................................................... 120
Servicing a Vehicle with a Locking Differential......................................................... 121
Emission Law
.................................................102
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance..........103
Tampering With a Noise Control System............................................................... 102
End User License Agreement..................353 SYNC End User License Agreement
(EULA).............................................................. 353
Engine Block Heater
.....................................90
Using the Engine Block Heater......................... 91
Engine Coolant Check - 6.7L Diesel.............................................................196
Adding Coolant.................................................... 197
Coolant Change.................................................. 199
Engine and Secondary Cooling System Refill Procedure.............................................. 198
Engine-driven Cooling Fan............................ 200
Recycled Coolant............................................... 199
Severe Climates.................................................. 199
Engine Coolant Check - 6.8L..................200 Adding Coolant................................................... 201
Engine Coolant Temperature Management.................................................. 203
Fail-Safe Cooling............................................... 202
Recycled Coolant............................................... 201
Severe Climates................................................. 202
Engine Emission Control
............................102
Engine Idle Shutdown..................................90
Engine Immobilizer See: Passive Anti-Theft System..................... 44
Engine Oil Check - 6.7L Diesel.................192 Adding Engine Oil............................................... 192
377
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Index

Engine lubrication for severe service
operation .......................................................... 193
Engine Oil Check - 6.8L..............................193 Adding Engine Oil............................................... 193
Engine Oil Dipstick - 6.7L Diesel..............192
Engine Oil Dipstick - 6.8L..........................192
Engine Specifications - 6.7L Diesel.......255 Drivebelt Routing............................................... 255
Engine Specifications - 6.8L...................256
Drivebelt Routing................................................ 257
Entering, Exiting or Climbing on This Vehicle..............................................................15
Environment.....................................................16
Essential Towing Checks...........................146 Before Towing a Trailer..................................... 146
Hitches................................................................... 146
Safety Chains....................................................... 146
Trailer Brakes........................................................ 146
Trailer Lamps....................................................... 146
When Towing a Trailer...................................... 146
Event Data Recording See: Data Recording............................................. 13
Exhaust Brake
.................................................127
Exhaust Brake Operating
Characteristics................................................ 128
Exhaust System Inspection.....................222
Export Unique Options.................................15
Exterior Mirrors
................................................53
Auxiliary Convex Mirrors..................................... 53
Clearance Lamps................................................. 54
Foldaway Exterior Mirrors.................................. 53
Heated Exterior Mirrors...................................... 54
Power Exterior Mirrors........................................ 53
Signal Indicator Mirrors...................................... 54
Telescoping Mirrors............................................. 54
F
Fastening the Seatbelts...............................33 Energy Management Feature.......................... 36
Fastening the Cinch Tongue............................. 34
Lap Belts.................................................................. 34
Seatbelt Locking Modes.................................... 35
Using Seatbelts During Pregnancy................35
Using the Seatbelt with Cinch Tongue (Front Center and Rear Center Seats
Only)..................................................................... 33Federal Highway Administration
Regulation.......................................................15
Fifth Wheel Operation
................................147
Hook-up.................................................................. 147
Un-hook.................................................................. 147
Flat Tire See: Changing a Road Wheel......................... 251
Ford Credit
......................................................160
US Only.................................................................. 160
Ford Protect...................................................320 Ford Protect Extended Service Plan
(CANADA ONLY)............................................ 321
Ford Protect Extended Service Plans (U.S. Only).................................................................. 320
Frame and Tow Hook Inspection
...........227
Front Seat Armrest.........................................81 20% Seat Cushion Storage............................... 81
Fuel and Refueling.........................................92
Fuel Consumption
.......................................100
Calculating Fuel Economy.............................. 100
Filling the Tank.................................................... 100
Fuel Filter - 6.8L...........................................207
Fuel Quality - Diesel......................................93 Biodiesel.................................................................. 94
Diesel Fuel Additives.......................................... 95
Fuel Requirements - Choosing The Right Fuel: Vehicles Operated Where Ultra Low
Sulfur Diesel Fuel Is Not Required ...........94
Fuel Requirements - Choosing The Right Fuel: Vehicles Operated Where Ultra Low
Sulfur Diesel Fuel Is Required (United
States/Canada/Puerto Rico/U.S. Virgin
Islands And Other Locales) ........................ 93
Fuel Quality - Gasoline................................96 Choosing the Right Fuel.................................... 96
Fuel Shutoff
....................................................155
Fuel Tank Selector Switch.........................101
Fuses..................................................................167
Fuse Specification Chart............................167 Passenger Compartment Fuse Panel.........172
Power Distribution Box..................................... 167
G
Gauges
...............................................................56
Diesel Engines....................................................... 58
Diesel Exhaust Fluid (DEF) Gauge................59
Engine Coolant Temperature Gauge.............57
378
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Index