2006 FORD SUPER DUTY octane

Octane recommendations
Your vehicle is designed to use
“Regular” unleaded gasoline with
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as “Regular” that
are sold with octane ratings of 86 or lower in high altitude areas.
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.
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. Aftermarket products 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.
Many of the world’s automakers approved the World-wide Fuel Charter
that recommends gasoline specifications to provide improved
performance and emission control system protection for your vehicle.
Gasolines that meet the World-wide Fuel Charter should be used when
available. Ask your fuel supplier about gasolines that meet the
World-wide Fuel Charter.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
affect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
87(R+M)/2 METHOD
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
270

•YourService engine soonindicator may come on. For more
information on theService engine soonindicator, refer to the
Instrument clusterchapter.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1,000 miles (1,600 km)
of driving (engine break-in period). You will get a more accurate
measurement after 2,000 miles-3,000 miles (3,000 km–5,000 km).
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in theRefill capacities
section of this chapter.
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 off 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 2 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.
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
271

slip axles. Ford design rear axles contain a synthetic lubricant that does
not require changing unless the axle has been submerged in water. Dana
rear axles also contain a synthetic lubricant butdorequire a change.
Refer to yourscheduled maintenance informationfor change intervals
on Dana rear axles.
2Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick handle. Check the
container to verify the fluid being added is of the correct type. Refer to
yourscheduled maintenance informationto determine the correct
service interval.
MERCON, MERCONV and MERCONSP are not
interchangeable. DO NOT mix MERCON, MERCONV and
MERCONSP. Use of dual usage fluids in an automatic
transmission application requiring MERCONSP may cause
transmission damage. Use of a transmission fluid other than the
recommended fluid may cause transmission damage.
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.
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
293

filter, specifications ........257, 286
recommendations ...................257
refill capacities ........................287
specifications ..........................290
Exhaust fumes ..........................169
F
Fail safe cooling ........................265
Fluid capacities .........................287
Foglamps .....................................40
Four-Wheel Drive vehicles .......183
description ..............................187
driving off road .......................189
electronic shift ................183, 187
indicator light .........................184
lever operated shift ................185
manual locking hubs ..............183
preparing to drive your
vehicle .....................................174
Fuel ............................................266
calculating fuel economy..72, 271
cap ...........................................268
capacity ...................................287
choosing the right fuel ...........269
comparisons with EPA fuel
economy estimates .................274
detergent in fuel .....................270
filling your vehicle
with fuel ..................266, 268, 271
filter, specifications ........266, 286
fuel pump shut-off switch .....203
improving fuel economy ........271
octane rating ...........270, 293–294
quality ......................................270
running out of fuel .................270
safety information relating to
automotive fuels .....................266
Fuel pump shut-off switch .......203
Fuses ..................................203–204G
Gas cap (see Fuel cap) ............268
Gas mileage
(see Fuel economy) .................271
Gauges .........................................16
transmission fluid
temperature gauge ...................20
H
Hazard flashers .........................202
Head restraints ...........................89
Headlamps ...................................39
aiming ..................................41, 43
autolamp system .......................39
daytime running lights .............40
flash to pass ..............................41
high beam .................................41
replacing bulbs .............46, 48–50
turning on and off ....................39
Heating
heating and air conditioning
system ...........................33–34, 36
Hood ..........................................250
I
Ignition .......................165, 293–294
Infant seats
(see Safety seats) .....................119
Inspection/maintenance (I/M)
testing ........................................276
Instrument panel
cleaning ...................................244
cluster ........................................12
lighting up panel and
interior .......................................41
J
Jump-starting your vehicle ......224
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
309

K
Keyless entry system .................86
Keys
positions of the ignition .........165
L
Lamps
autolamp system .......................39
daytime running light ...............40
fog lamps ...................................40
headlamps .................................39
headlamps, flash to pass ..........41
instrument panel, dimming .....41
interior lamps ...........................45
replacing bulbs .............46, 48–53
Lane change indicator
(see Turn signal) ........................45
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........171
speed control ............................63
Load limits .................................146
Loading instructions .................153
Locks
childproof ..................................81
Lubricant specifications ...........290
Lug nuts ....................................223
Lumbar support, seats ...............94
M
Manual transmission .................178
fluid capacities ........................287
reverse .....................................180
Message center ...............67, 69–70
english/metric button ...............74
system check button ................73warning messages .....................75
Mirrors .........................................55
automatic dimming rearview
mirror ........................................58
fold away ...................................60
heated ........................................58
side view mirrors (power) .......58
signal .........................................59
Moon roof ....................................66
Motorcraft parts ................266, 286
O
Octane rating ............................270
Oil (see Engine oil) ..................254
Overdrive .....................................55
P
Parking brake ............................172
Parts (see Motorcraft parts) ....286
Pedals (see Power adjustable
foot pedals) .................................61
Power adjustable foot pedals .....61
Power distribution box
(see Fuses) ...............................209
Power door locks ........................80
Power mirrors .............................58
Power point .................................56
Power steering ..........................173
fluid, checking and adding ....276
fluid, refill capacity ................287
fluid, specifications .................290
Power Windows ...........................56
Preparing to drive your
vehicle ........................................174
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
310