2008 FORD SUPER DUTY ignition

•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.
EMISSION CONTROL SYSTEM
Your vehicle is equipped with various emission control components and a
catalytic converter which will enable your vehicle to comply with
applicable exhaust emission standards. To make sure that the catalytic
converter and other emission control components continue to work
properly:
•Use only the specified fuel listed.
•Avoid running out of fuel.
•Do not turn off the ignition while your vehicle is moving, especially at
high speeds.
•Have the items listed in yourscheduled maintenance information
performed according to the specified schedule.
The scheduled maintenance items listed in thescheduled maintenance
informationare essential to the life and performance of your vehicle
and to its emissions system.
If other than Ford, Motorcraft or Ford-authorized parts are used for
maintenance replacements or for service of components affecting
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
338

ENGINE DATA
Engine 5.4L V8 engine 6.8L V10 engine
Cubic inches 330 415
Required fuel 87 octane 87 octane
Firing order 1-3-7-2-6-5-4-8 1-6-5-10-2-7-3-8-4-9
Spark plug gap1.02–1.28mm
(0.040–0.050 inch)*1.02–1.28mm
(0.040–0.050 inch)*
Ignition system Coil on plug Coil on plug
Compression ratio 9.8:1 9.2:1
*The 5.4L 3V and 6.8L 3V spark plug gap CANNOT be adjusted.
Drivebelt routing
5.4L V8/6.8L V10 engines
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
356

recommendations ...................321
refill capacities ........................352
Exhaust fumes ..........................234
F
Fail safe cooling ........................328
Family entertainment system ....43
Fluid capacities .........................352
Foglamps .....................................80
Four-Wheel Drive vehicles .......248
description ..............................252
driving off road .......................254
electronic shift ................248, 252
indicator light .........................249
lever operated shift ................250
manual locking hubs ..............248
preparing to drive your
vehicle .....................................239
Fuel ............................................330
calculating fuel
economy ..........................124, 335
cap ...........................................332
capacity ...................................352
choosing the right fuel ...........333
comparisons with EPA fuel
economy estimates .................338
detergent in fuel .....................334
filling your vehicle
with fuel ..................330, 332, 335
filter, specifications ........330, 350
fuel pump shut-off switch .....267
improving fuel economy ........335
octane rating ...................334, 356
quality ......................................334
running out of fuel .................334
safety information relating to
automotive fuels .....................330
Fuel pump shut-off switch .......267
Fuses ..................................268–269G
Gas cap (see Fuel cap) ............332
Gas mileage
(see Fuel economy) .................335
Gauges .........................................18
transmission fluid
temperature gauge ...................22
H
Hazard flashers .........................267
Head restraints .........................151
Headlamps ...................................80
aiming ..................................82, 84
autolamp system .......................80
daytime running lights .............81
flash to pass ..............................81
high beam .................................81
replacing bulbs .............86, 88–90
turning on and off ....................80
Heating
heating and air conditioning
system ...........................71–72, 75
Homelink wireless control
system ........................................112
Hood ..........................................315
I
Ignition ...............................231, 356
Infant seats
(see Safety seats) .....................184
Inspection/maintenance (I/M)
testing ........................................340
Instrument panel
cleaning ...................................309
cluster ........................................12
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
363

lighting up panel and
interior .......................................82
J
Jump-starting your vehicle ......290
K
Keyless entry system ...............146
autolock ...................................136
programming entry code .......146
Keys ...........................................149
positions of the ignition .........231
L
Lamps
autolamp system .......................80
daytime running light ...............81
fog lamps ...................................80
headlamps .................................80
headlamps, flash to pass ..........81
instrument panel, dimming .....82
interior lamps ...........................85
replacing bulbs ....... 85–86, 88–93
Lane change indicator
(see Turn signal) ........................85
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........235
Load limits .................................212
Loading instructions .................218
Locks
autolock ...................................136
childproof ................................140
Lug nuts ....................................289
Lumbar support, seats .............155
M
Manual transmission .................244fluid capacities ........................352
reverse .....................................245
Message center .................116, 122
english/metric button .............126
system check button ..............125
warning messages ...........119, 128
Mirrors ...................................96, 99
fold away .................100, 102–103
heated ......................................100
side view mirrors (power) .....100
signal .......................................103
Moon roof ..................................110
Motorcraft parts ................330, 350
N
Navigation system .......................43
O
Octane rating ............................334
Oil (see Engine oil) ..................319
Overdrive .....................................95
P
Parking brake ............................236
Parts (see Motorcraft parts) ....350
Pedals (see Power adjustable
foot pedals) ...............................104
Power adjustable foot pedals ...104
Power distribution box
(see Fuses) ...............................273
Power door locks ......................136
Power mirrors ...........................100
Power point .................................96
Power steering ..........................238
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
364