
Frequent low-speed operation, consistent heavy traffic under 25 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 15000 miles (24000
km), six months, 600 engine
hours, or as indicated by the
information display
Inspect the coolant concentration (freeze-point protec-
tion) and additive (corrosion inhibitor) strength. Add
coolant additive if necessary.
Every 30000 miles (48000
km) or 1200 engine hours
Flush and refill the coolant. Do not add coolant additive.
Every 60000 miles (96000
km) or 2400 engine hours
Note: When adding coolant additive, do not exceed the specified maximum of 48 fluid
ounces (1.4 liters) for the engine and 16 fluid ounces (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 60000 miles (96000 kilometers) or 2400
engine hours, flush and fill every 45000 miles (72000 kilometers) or 1800 engine hours
thereafter.
333
F-650/750 (TBC) , enUSA, First 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 15000 miles (24000
km), six months, 600 engine
hours, or as indicated by the
information display
Inspect the coolant concentration (freeze-point protec-
tion) and additive (corrosion inhibitor) strength. Add
coolant additive if necessary.
Every 30000 miles (48000
km) or 1200 engine hours
Flush and refill the coolant. Do not add coolant additive.
Every 60000 miles (96000
km) or 2400 engine hours
Note: When adding coolant additive, do not exceed the specified maximum of 48 fluid
ounces (1.4 liters) for the engine and 16 fluid ounces (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 60000 miles (96000 kilometers) or 2400
engine hours, flush and fill every 45000 miles (72000 kilometers) or 1800 engine hours
thereafter. Operating in sustained ambient temperatures below -10°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 15000 miles (24000
km), six months, 600 engine
hours, or as indicated by the
information display
334
F-650/750 (TBC) , enUSA, First Printing Scheduled Maintenance

Draining the Fuel Filter Water Trap - 6.7L
Diesel.............................................................202
Draining the Diesel Fuel Conditioner Module (DFCM)............................................................. 202
Driving Aids.....................................................134
Driving Hints...................................................143
Driving Through Water................................147 Operation in Standing Water.......................... 147
DRL See: Daytime Running Lamps......................... 48
E
Economical Driving......................................144
Electrical System Inspection
....................217
Accessory Feed Connections.......................... 217
Electronic Locking Differential..................117 Activating the Locking Differential...............118
Driver-Controlled Locking Differential.........117
Servicing a Vehicle with a Locking
Differential........................................................ 118
Emission Control System - Diesel..........105 Oxidation Catalytic Converter and Diesel
Particulate Filter System............................ 105
Emission Control System - Gasoline........................................................103
On-Board Diagnostics (OBD-II)................... 104
Readiness for Inspection and Maintenance (I/M) Testing................................................... 105
End User License Agreement.................348 SYNC End User License Agreement
(EULA).............................................................. 348
Engine Block Heater
.....................................88
Rapid Heat Supplemental Heating
System................................................................ 89
Using the Engine Block Heater....................... 89
Engine Coolant Check - 6.7L Diesel.............................................................194
Adding Coolant................................................... 195
Checking Coolant Corrosion Inhibitor Additive Strength .......................................... 197
Coolant Change.................................................. 198
Engine and Secondary Cooling System Refill Procedure.............................................. 196
Engine-driven Cooling Fan (Fan Clutch)............................................................... 198
Recycled Coolant................................................ 197
Severe Climates................................................... 197Engine Coolant Check - 6.8L...................189
Adding Coolant................................................... 190
Coolant Change.................................................. 192
Engine Coolant Temperature Management................................................... 193
Engine-driven Cooling Fan (Fan Clutch)............................................................... 192
Fail-Safe Cooling................................................ 192
Recycled Coolant................................................. 191
Severe Climates.................................................. 192
Engine Idle Shutdown..................................88
Engine Immobilizer See: Passive Anti-Theft System..................... 42
Engine Oil Check - 6.7L Diesel.................186 Adding Engine Oil............................................... 187
Engine Oil Check - 6.8L
..............................185
Adding Engine Oil............................................... 185
Engine Oil Dipstick - 6.7L Diesel.............185
Engine Oil Dipstick - 6.8L..........................185
Engine Specifications - 6.7L Diesel
.......252
Drivebelt Routing............................................... 252
Engine Specifications - 6.8L
....................252
Drivebelt Routing............................................... 252
Entering, Exiting or Climbing on This Vehicle..............................................................15
Environment.....................................................16
Essential Towing Checks...........................140 Before Towing a Trailer..................................... 140
Hitches................................................................... 140
Safety Chains....................................................... 140
Trailer Brakes....................................................... 140
Trailer Lamps....................................................... 140
When Towing a Trailer...................................... 140
Event Data Recording See: Data Recording............................................. 12
Exhaust Brake................................................124 Exhaust Brake Operating
Characteristics................................................ 126
Exhaust System Inspection......................218
Export Unique Options.................................14
Exterior Mirrors
.................................................51
Auxiliary Convex Mirrors...................................... 51
Clearance Lamps................................................. 52
Foldaway Exterior Mirrors...................................51
Heated Exterior Mirrors...................................... 52
Power Exterior Mirrors......................................... 51
Signal Indicator Mirrors...................................... 52
Telescoping Mirrors.............................................. 52
373
F-650/750 (TBC) , enUSA, First Printing Index