2009 FORD F250 octane

Choosing the right fuel
Use only UNLEADED fuel or UNLEADED fuel blended with a maximum
of 10% ethanol. Do not use fuel ethanol (E85), diesel, methanol, leaded
fuel or any other fuel. The use of leaded fuel is prohibited by law and
could damage your vehicle.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives.
Note:Use of any fuel other than those recommended may cause
powertrain damage, a loss of vehicle performance, and repairs may not
be covered under warranty.
Octane recommendations
Your vehicle is designed to use
“Regular” unleaded gasoline with a
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as “Regular” in
high altitude areas that are sold with octane ratings less than 87.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your authorized dealer to
prevent any engine damage.
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems, try a different brand of unleaded gasoline. “Premium”
unleaded gasoline is not recommended for vehicles designed to use
“Regular” unleaded gasoline because it may cause these problems to
become more pronounced. If the problems persist, see your authorized
dealer.
Do not add aftermarket fuel additive products to your fuel tank. It
should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. These products have not been approved for your engine and
could cause damage to the fuel system. Repairs to correct the effects of
using an aftermarket product in your fuel may not be covered by your
warranty.
87(R+M)/2 METHOD
2009 F-250/350/450/550(f23)
Owners Guide, 3rd Printing
USA(fus)
Maintenance and Specifications
387

The advertised capacity is the amount of the indicated capacity and the
empty reserve combined. Indicated capacity is the difference in the
amount of fuel in a full tank and a tank when the fuel gauge indicates
empty. Empty reserve is the small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase driving range. When refueling your
vehicle after the fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised capacity of the
fuel tank due to the empty reserve still present in the tank.
For consistent results when filling the fuel tank:
•Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
•Use the same filling rate setting (low — medium — high) each time
the tank is filled.
•Allow no more than two automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in miles or kilometers).
2. Each time you fill the tank, record the amount of fuel added (in
gallons or liters).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
5. Follow one of the simple calculations in order to determine fuel
economy:
Calculation 1:Divide total miles traveled by total gallons used.
Calculation 2:Multiply liters used by 100, then divide by total
kilometers traveled.
2009 F-250/350/450/550(f23)
Owners Guide, 3rd Printing
USA(fus)
Maintenance and Specifications
389

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 gap1.0–1.1mm
(0.039–0.043 inch)1.0–1.1mm
(0.039–0.043 inch)
Ignition system Coil on plug Coil on plug
Compression ratio 9.8:1 9.2:1
Drivebelt routing
5.4L V8/6.8L V10 engines
2009 F-250/350/450/550(f23)
Owners Guide, 3rd Printing
USA(fus)
Maintenance and Specifications
409

recommendations ...................374
refill capacities ........................405
Event data recording ....................7
Exhaust fumes ..........................278
F
Fail safe cooling ........................382
Family entertainment system ....51
Fluid capacities .........................405
Fog lamps ....................................89
Four-Wheel Drive vehicles .......296
description ..............................301
driving off road .......................303
electronic shift ................297, 301
indicator light .........................298
lever operated shift ................299
manual locking hubs ..............297
preparing to drive your
vehicle .....................................284
Fuel ............................................383
calculating fuel
economy ..........................139, 388
cap ...........................................386
capacity ...................................405
choosing the right fuel ...........387
comparisons with EPA fuel
economy estimates .................391
detergent in fuel .....................388
filling your vehicle
with fuel ..................383, 386, 388
filter, specifications ........383, 404
fuel pump shut-off switch .....317
improving fuel economy ........388
octane rating ...................387, 409
quality ......................................387
running out of fuel .................388
safety information relating to
automotive fuels .....................383Fuel pump shut-off switch .......317
Fuses ..................................318–319
G
Gas cap (see Fuel cap) ............386
Gas mileage (see Fuel
economy) ...................................388
Gauges .........................................21
transmission fluid
temperature gauge ...................26
H
Hazard flashers .........................316
Head restraints .................172, 178
Headlamps ...................................89
aiming ..................................91, 93
autolamp system .......................89
daytime running lights .............90
flash to pass ..............................90
high beam .................................90
replacing bulbs ...................97–99
turning on and off ....................89
Heating
heater only system ...................80
heating and air conditioning
system .................................81, 84
Homelink wireless control
system ........................................123
Hood ..........................................368
I
Ignition ...............................275, 409
Illuminated visor mirror ...........105
Infant seats
(see Safety seats) .....................206
2009 F-250/350/450/550(f23)
Owners Guide, 3rd Printing
USA(fus)
Index
416

Inspection/maintenance (I/M)
testing ........................................394
Instrument panel
cleaning ...........................361–362
cluster ........................................14
lighting up panel
and interior ...............................91
J
Jump-starting your vehicle ......343
K
Keyless entry system
autolock ...................................156
keypad .....................................166
locking and unlocking
doors ........................................167
programming entry code .......166
Keys ...........................................169
positions of the ignition .........275
L
Lamps
autolamp system .......................89
daytime running light ...............90
fog lamps ...................................89
headlamps .................................89
headlamps, flash to pass ..........90
instrument panel, dimming .....91
interior lamps ...........................95
replacing bulbs .................97–102
LATCH anchors .........................215
Lights, warning and indicator ....14
anti-lock brakes (ABS) ..........281
Limited-slip axle .......................284
Load limits .................................256
Loading instructions .................262Locks
autolock ...................................156
childproof ................................159
doors ........................................155
Lug nuts ....................................342
Lumbar support, seats .....176–177
M
Manual transmission .................289
fluid capacities ........................405
reverse .....................................291
Message center .................127, 137
english/metric button .............142
system check button ..............140
warning messages ...........131, 144
Mirrors ...............................110–111
automatic dimming rearview
mirror ......................................110
fold away .........................112, 114
side view mirrors (power) .....111
signal .......................................115
Moon roof ..................................122
Motorcraft parts ................383, 404
N
Navigation system .......................79
O
Octane rating ............................387
Oil (see Engine oil) ..................372
Overdrive ...................................104
P
Parking brake ............................281
Parts (see Motorcraft parts) ....404
2009 F-250/350/450/550(f23)
Owners Guide, 3rd Printing
USA(fus)
Index
417