Page 274 of 312

• Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle’s scheduled maintenance information.
Conditions
• Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
• Carrying unnecessary weight may reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
• Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
• Using fuel blended with alcohol may lower fuel economy.
• Fuel economy may decrease with lower temperatures during the first
8–10 miles (12–16 km) of driving.
• Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
• Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
• Four-wheel-drive operation (if equipped) is less fuel efficient than
two-wheel-drive operation.
• Close windows for high speed driving.
EPA window sticker
Every new vehicle should have the EPA window sticker. Contact your
authorized dealer if the window sticker is not supplied with your vehicle.
The EPA window sticker should be your guide for the fuel economy
comparisons with other vehicles.
It is important to note the box in the lower left corner of the window
sticker. These numbers represent the Range of MPG (L/100 km)
expected on the vehicle under optimum conditions. Your fuel economy
may vary depending upon the method of operation and conditions.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)Maintenance and Specifications
274
Page 303 of 312
Tonneau covers
Wheels
Interior style
Electrochromatic compass/temperature interior mirrors
Floor mats
Speed control
Lifestyle
Bedliners and bedmats
Bed tents
Bike racks
Sport Liner
Toolboxes
Towing mirrors
Trailer hitches, wiring harnesses and accessories
Peace of mind
First aid and highway safety kits
Full vehicle covers
Keyless entry
Locking gas cap
Mobile-Ease hand-free communication system
Remote start
Vehicle security systems
For maximum vehicle performance, keep the following information in
mind when adding accessories or equipment to your vehicle:
• When adding accessories, equipment, passengers and luggage to your
vehicle, do not exceed the total weight capacity of the vehicle or of
the front or rear axle (GVWR or GAWR as indicated on the Safety
Compliance Certification Label). Consult your authorized dealer for
specific weight information.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Accessories
303
Page 309 of 312

Relays ........................................205
Remote entry system .................82
illuminated entry ......................86
locking/unlocking doors ...........80
Reverse sensing system ...........182
Roadside assistance ..................202
S
Safety Belt Maintenance ..........108
Safety belts
(see Safety restraints) .......97–101
Safety defects, reporting ..........240
Safety restraints ..................97–101
belt minder .............................104
extension assembly ................107
for adults ...........................98–101
for children .....................117–118
lap belt ....................................102
safety belt maintenance .........108
warning light and
chime ...............................103–104
Safety seats for children ..........121
Safety Compliance
Certification Label ....................300
Seat belts
(see Safety restraints) ...............97
Seats ............................................90
child safety seats ....................121
cleaning ...................................246
Servicing your vehicle ..............249
Snowplowing .................8, 199–201
Spark plugs,
specifications .....................286, 293
Special notice ................................9
ambulance conversions ..............8
diesel-powered vehicles .............8 utility-type vehicles ....................8
Specification chart,
lubricants ...................................290
Speed control ..............................61
Starting your vehicle .......167–168,
171
jump starting ..........................226
Steering wheel
controls ......................................66
tilting .........................................54
T
Tailgate ..................................78–79
Tilt steering wheel ......................54
Tires ...................................131–132
alignment ................................140
care ..........................................137
changing ..................................218
checking the pressure ............136
inspecting and inflating .........133
label .........................................147
replacing ..................................139
rotating ....................................141
safety practices .......................139
sidewall information ...............142
snow tires and chains ............148
spare tire .........................214, 216
terminology .............................132
tire grades ...............................132
treadwear ........................131, 138
Towing .......................................155
Trailer Brake
Controller-Integrated ..............159
trailer towing ..........................155
wrecker ....................................232
Traction-lok rear axle ...............175
Trailer Brake
Controller-Integrated ................159
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Index
309
Page 310 of 312

Transfer case
fluid checking .........................283
Transmission
automatic operation .........55, 176
brake-shift interlock (BSI) ....176
fluid, checking and adding
(automatic) .............................279
fluid, checking and adding
(manual) .................................282
fluid, refill capacities ..............287
lubricant specifications ..........290
manual operation ....................180
Turn signal ..................................44
U
Upfitter controls .........................64
V
Vehicle dimensions ...................293 Vehicle Identification Number
(VIN) ..........................................300
Vehicle loading ..........................148
Ventilating your vehicle ...........171
W
Warning lights (see Lights)
.......12
Washer fluid
..............................253
Water, Driving through
.............198
Windows
power
.........................................57
Windshield washer fluid and
wipers
..........................................54
checking and adding fluid
.....253
replacing wiper blades
...........254
Wrecker towing
.........................232
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)Index
310