2008 FORD E SERIES octane

If you do not use the proper fuel filler cap, excessive vacuum in
the fuel tank may damage the fuel system or cause the fuel cap
to disengage in a collision, which may result in personal injury.
Choosing the right fuel
Use only UNLEADED fuel or UNLEADED fuel blended with a maximum
of 10% ethanol. Your vehicle was not designed to run on E85 fuels that
are blended with a maximum of 85% ethanol. The use of leaded fuel is
prohibited by law and could damage your vehicle. Do not use fuel
containing methanol. It can damage critical fuel system components.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives. Studies indicate that
these additives can cause your vehicle’s emission control system to
deteriorate more rapidly.
Repairs to correct the effects of using a fuel for which your vehicle was
not designed may not be covered by your warranty.
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.
87(R+M)/2 METHOD
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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.
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, per the recommendations in theChoosing the Right
Fuelsection.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
effect 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. On restarting, cranking time will take a few seconds longer
than normal.
•Normally, adding 1 gallon (3.8L) of fuel is enough to restart the
engine. If the vehicle is out of fuel and on a steep grade, more than 1
gallon (3.8L) may be required.
•TheService engine soon
indicator may come on. For more
information on theService engine soon
indicator, refer to
Warning lights and chimesin theInstrument Clusterchapter.
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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 theMaintenance
product specifications and capacitiessection 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 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.
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ENGINE DATA
Engine*4.6L V8
engine5.4L V8
engine6.8L V10 engine
Cubic inches 281 330 415
Required fuel 87 octane 87 octane 87 octane
Firing order 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8 1-6-5-10-2-7-3-8-4-9
Ignition system Coil on plug Coil on plug Coil on plug
Spark plug gap0.052–0.056
inch
(1.32–1.42mm)0.052–0.056
inch
(1.32–1.42mm)0.052–0.056 inch
(1.32–1.42mm)
Compression
ratio9.4:1 9.0:1 9.0:1
*Refer to the6.0L and 6.4L Power Stroke Direct Injection Turbo
Diesel Owner’s Guide Supplementfor diesel engine information.
Engine drivebelt routing
•4.6L V8 and 5.4L V8 Engines without A/C
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Exhaust fumes ..........................163
F
Fail safe cooling ........................243
Fluid capacities .........................264
Four-Wheel Drive vehicles
preparing to drive your
vehicle .....................................172
Fuel ............................................244
calculating fuel economy .......250
cap ...........................................247
capacity ...................................264
choosing the right fuel ...........248
comparisons with EPA fuel
economy estimates .................252
detergent in fuel .....................249
filling your vehicle with
fuel ...........................244, 247, 250
filter, specifications ........244, 263
fuel pump shut-off switch .....188
improving fuel economy ........250
octane rating ...................248, 268
quality ......................................249
running out of fuel .................249
safety information relating to
automotive fuels .....................244
Fuses ..........................................190
G
Garage door opener ....................48
Gas cap (see Fuel cap) ............247
Gas mileage
(see Fuel economy) .................250
Gauges .........................................17
H
Hazard flashers .........................188Headlamps ...................................34
aiming ........................................37
bulb specifications ....................40
daytime running lights .............35
flash to pass ..............................35
high beam .................................35
replacing bulbs .........................41
turning on and off ....................34
Heating
heater only system .............31, 33
heating and air conditioning
system .......................................32
Hood ..........................................230
I
Ignition ...............................161, 268
Illuminated visor mirror .............47
Infant seats
(see Safety seats) .....................100
Inspection/maintenance (I/M)
testing ........................................255
Instrument panel
cleaning ...................................226
cluster ........................................12
lighting up panel and
interior .......................................36
J
Jack ............................................198
positioning ...............................198
storage .....................................198
Jump-starting your vehicle ......207
K
Keyless entry system
autolock .....................................57
Keys .............................................67
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positions of the ignition .........161
L
Lamps
bulb replacement
specifications chart ..................40
daytime running light ...............35
headlamps .................................34
headlamps, flash to pass ..........35
instrument panel, dimming .....36
interior lamps ...........................39
replacing bulbs .........................41
Lane change indicator
(see Turn signal) ........................39
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........166
Load limits .................................144
Loading instructions .................150
Locks ............................................57
autolock .....................................57
doors ..........................................57
Lubricant specifications ...........264
Lug nuts ....................................206
Lumbar support, seats ...............70
M
Mirrors .........................................52
fold away ...................................53
side view mirrors (power) .......52
Motorcraft parts ........227, 244, 263
O
Octane rating ............................248
Oil (see Engine oil) ..................233
P
Parking brake ............................167Parts (see Motorcraft parts) ....263
Power distribution box
(see Fuses) ...............................193
Power door locks ........................57
Power mirrors .............................52
Power point .................................50
Power steering ..........................171
fluid, checking and adding ....256
fluid, refill capacity ................264
fluid, specifications .................264
Power Windows ...........................51
Preparing to drive your
vehicle ........................................172
R
Radio ................................19, 21, 25
Relays ................................190, 196
Remote entry system .................61
illuminated entry ......................65
locking/unlocking
doors ..............................57, 62–63
panic alarm ...............................63
replacement/additional
transmitters ...............................64
replacing the batteries .............63
Reverse sensing system ...........182
Roadside assistance ..................186
Roll stability control .................168
S
Safety Belt Maintenance ............85
Safety belts
(see Safety restraints) .........76–80
Safety defects, reporting ..220–221
Safety restraints ....................76–80
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