
Frequent Low-speed Operation, Consistent Heavy Traffic Under 24.9 mph (40 km/h) or
Long Rush-hour Traffic
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.
336
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Scheduled Maintenance

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

Engine Oil Pressure Gauge................................
57
Fuel Gauge.............................................................. 57
Gasoline Engines.................................................. 56
Gauge Package...................................................... 57
Information Display............................................. 58
Transmission Fluid Temperature Gauge................................................................... 57
Gearbox See: Transmission............................................... 115
General Driving Points................................149
Backing Up............................................................ 149
General Information.......................................... 149
Parking .................................................................... 150
General Information on Radio Frequencies..................................................40
General Maintenance Information
........322
Multi-point Inspection..................................... 326
Owner Checks and Services.......................... 324
Protecting Your Investment........................... 322
Why Maintain Your Vehicle?.......................... 322
Why Maintain Your Vehicle at Your Dealership?..................................................... 322
Getting Assistance Outside the U.S. and Canada..........................................................163
Getting the Services You Need...............160 Away From Home.............................................. 160
H
Handbrake See: Parking Brake.............................................. 123
Hazard Flashers
.............................................155
Headlamp Adjusting See: Adjusting the Headlamps...................... 210
Headlamp Removal See: Removing a Headlamp........................... 212
Headrest See: Head Restraints........................................... 75
Head Restraints...............................................75 Adjusting the Head Restraint........................... 76
Heated Exterior Mirrors.................................74
Heating See: Climate Control........................................... 72
Hints on Controlling the Interior Climate
............................................................73
Defogging the Side Windows in Cold
Weather............................................................... 74
General Hints.......................................................... 73Quickly Cooling the Interior...............................
73
Quickly Heating the Interior.............................. 73
Recommended Settings for Cooling.............73
Recommended Settings for Heating............73
Vehicle Stationary for Extended Periods During Extreme High Ambient
Temperatures.................................................... 74
Hints on Driving With Anti-Lock Brakes.............................................................123
Hood Lock See: Opening and Closing the Hood...........188
I
Ignition Switch
................................................86
In California (U.S. Only)..............................161
Information Display Control.......................47
Information Displays
....................................64
General Information........................................... 64
Information Messages
..................................67
Diesel Messages................................................... 67
Engine....................................................................... 70
Fuel........................................................................\
.... 70
Key........................................................................\
....... 71
Maintenance............................................................ 71
Park Brake................................................................. 71
Installing Child Restraints...........................20 Child Restraints..................................................... 20
Tether Strap Attachment.................................. 26
Using Cinch Tongue Lap and Shoulder Belts (All Front Center, Super Cab and Crew
Cab Rear Center Positions)......................... 23
Using Lap and Shoulder Belts.......................... 21
Using Lower Anchors and Tethers for CHildren (LATCH)............................................ 25
Using Tether Straps............................................. 25
Instrument Cluster
........................................56
Instrument Lighting Dimmer.....................50
Instrument Panel Overview.........................17
Interior Lamps
..................................................51
Interior Mirror...................................................55
Introduction.........................................................7
J
Jump Starting the Vehicle.........................156 Connecting the Jumper Cables..................... 156
Jump Starting....................................................... 157
379
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Index