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
A
Accessory delay ..........................99
Air cleaner filter ...............348–350
Air conditioning ..........................75
Airbag supplemental restraint
system ................................171–172
and child safety seats ............173
description ..............................172
disposal ....................................175
driver airbag ............................174
indicator light .........................175
operation .................................174
passenger airbag .....................174
passenger deactivation
switch ......................................176
Ambulance packages ....................8
Antifreeze
(see Engine coolant) ................324
Anti-lock brake system
(see Brakes) ..............................235
Anti-theft system ......................148
arming the system ..................149
Audio system
(see Radio) ......................22, 24, 30
Automatic transmission ............240
driving an automatic
overdrive .................................241
fluid, adding ............................343
fluid, checking ........................343
fluid, refill capacities ..............352
Auxiliary Input Jack ...................36
Auxiliary power point .................96
Axle
refill capacities ........................352
traction lok ..............................239
B
Battery .......................................322acid, treating emergencies .....322
jumping a disabled battery ....290
maintenance-free ....................322
replacement, specifications ...350
servicing ..................................322
Belt-Minder.............................167
Brakes ........................................235
anti-lock ...................................235
anti-lock brake system (ABS)
warning light ...........................235
fluid, checking and adding ....342
fluid, refill capacities ..............352
parking ....................................236
shift interlock ..........................240
trailer .......................................223
Break-in period .............................5
Bulbs ............................................85
C
Capacities for refilling fluids ....352
Cassette tape player ...................22
Cell phone use ..............................7
Child safety restraints ..............181
child safety belts ....................181
Child safety seats ......................184
attaching with tether straps ..188
in front seat ............................185
in rear seat ..............................185
Cleaning your vehicle
engine compartment ..............307
instrument panel ....................309
interior .....................................310
plastic parts ............................309
safety belts ..............................310
washing ....................................306
waxing .....................................306
wheels ......................................307
wiper blades ............................309
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
361
fluid, checking and adding ....340
fluid, refill capacity ................352
Power Windows ...........................98
Preparing to drive
your vehicle ...............................239
R
Radio ................................22, 24, 30
Rear seat entertainment
system ..........................................43
Relays ........................................268
Remote entry system ...............141
illuminated entry ............144, 146
locking/unlocking doors .........136
Reverse sensing system ...........246
Roadside assistance ..................265
S
Safety Belt Maintenance ..........170
Safety belts (see Safety
restraints) ..........158, 160–162, 164
Safety defects,
reporting ............................304–305
Safety
restraints ...........158, 160–162, 164
Belt-Minder...........................167
extension assembly ................170
for adults .................160–162, 164
for children .....................180–181
lap belt ....................................166
safety belt maintenance .........170
warning light and
chime ...............................166–167
Safety seats for children ..........184
Safety Compliance
Certification Label ....................357Satellite Radio Information ........40
Seat belts
(see Safety restraints) .............158
Seats ..........................................151
child safety seats ....................184
cleaning ...................................311
heated ........................................75
memory seat ...................142, 156
SecuriLock passive anti-theft
system ................................148–149
Servicing your vehicle ..............314
Setting the clock
AM/FM/CD .................................25
AM/FM/In-dash 6 CD ................31
Snowplowing .................8, 262–264
Spark plugs,
specifications .....................350, 356
Special notice ................................9
ambulance conversions ..............8
diesel-powered vehicles .............8
utility-type vehicles ....................8
Speed control ............................104
Starting your vehicle ........231–233
jump starting ..........................290
Steering wheel
controls ....................................107
tilting .........................................95
T
Tailgate ......................................131
Tilt steering wheel ......................95
Tires ...................................194–195
alignment ................................204
care ..........................................200
changing ..........................279, 282
checking the pressure ............199
inflating ...................................196
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
365
