2012 FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS octane

Use the following guidelines to avoid electrostatic charge build-up when
filling an ungrounded fuel container:
•Place approved fuel container on the ground.
•DO NOT fill a fuel container while it is in the vehicle (including the
cargo area).
•Keep the fuel pump nozzle in contact with the fuel container while
filling.
•DO NOT use a device that would hold the fuel pump handle in the fill
position.
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
“Regular” unleaded gasoline with a
pump (R+M)/2 octane rating of 87 is
recommended. Some stations offer
fuels posted as “Regular” with an
octane rating below 87, particularly
in high altitude areas. Fuels with octane levels below 87 are not
recommended.
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 during a cold start, try a different brand of “Regular” unleaded
gasoline.
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.
•The service engine soon
indicator may come on. For more
information on the service engine soon
indicator, refer to
Warning lights and chimesin theInstrument Clusterchapter.
Maintenance and Specifications
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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 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.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Maintenance and Specifications
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ENGINE DATA
Engine 6.8L V10 engine
Cubic inches 415
Required fuel Minimum 87 octane
Firing order 1-6-5-10-2-7-3-8-4-9
Ignition system Coil on plug
Spark plug gap 0.039-0.043 inch (1.00-1.10mm)
Compression ratio 9.2:1
Engine drivebelt routing
Engines with A/C
Engines without A/C
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Emergencies, roadside
jump-starting ............................80
Emergency Flashers ...................65
Emission control system ..........114
Engine ........................................131
cleaning .....................................92
coolant .....................................101
fail-safe cooling .......................105
idle speed control .....................98
lubrication specifications .......128
refill capacities ........................128
service points ......................94–95
Engine oil ....................................96
checking and adding ................96
dipstick ......................................96
filter, specifications ..........97, 127
recommendations .....................97
refill capacities ........................128
specifications ..........................128
Event data recording ....................5
Exhaust fumes ............................54
F
Fail safe cooling ........................105
Fluid capacities .........................128
Fuel ............................................107
calculating fuel economy .......111
capacity ...................................128
choosing the right fuel ...........109
detergent in fuel .....................110
filling your vehicle with
fuel ...................................107, 111
filter, specifications ........106, 127
improving fuel economy ........111
octane rating ...................109, 131
quality ......................................110
running out of fuel .................110
safety information relating to
automotive fuels .....................107Fuses ......................................66–67
G
Gas mileage
(see Fuel economy) .................111
Gauges .........................................13
H
Hazard flashers ...........................65
Headlamps ...................................20
daytime running lights .............20
flash to pass ..............................21
high beam .................................20
turning on and off ....................20
I
Ignition .................................51, 131
Inspection/maintenance (I/M)
testing ........................................115
Instrument panel
cluster ........................................10
lighting up panel and
interior .......................................21
J
Jump-starting your vehicle ........80
K
Keys
positions of the ignition ...........51
L
Lamps
daytime running light ...............20
headlamps .................................20
Index
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headlamps, flash to pass ..........21
instrument panel, dimming .....21
Lights, warning and indicator ....10
anti-lock brakes (ABS) ............56
Loading instructions ...................47
Load limits ...................................42
Lubricant specifications ...........128
Lug nuts ......................................79
M
Message center ...........................16
english/metric button ...............18
system check button ................18
warning messages .....................18
Motorcraftparts ......................127
O
Octane rating ............................109
Oil (see Engine oil) ....................96
P
Parking brake ..............................57
Parts
(see Motorcraftparts) ...........127
Power distribution box
(see Fuses) .................................70
Power steering
fluid, checking and adding ....117
fluid, refill capacity ................128
fluid, specifications .................128
R
Relays ....................................66, 74
Roadside assistance ....................64S
Safety defects, reporting ............91
Scheduled Maintenance Guide
Normal Scheduled
Maintenance and Log .............143
Servicing your vehicle ................93
Spark plugs,
specifications .....................127, 131
Special notice ................................5
Specification chart,
lubricants ...................................128
Speed control ..............................23
Starting your vehicle ............51–53
jump starting ............................80
Steering wheel
tilting .........................................22
T
Tilt steering wheel ......................22
Tires .......................................25–26
alignment ..................................35
care ............................................31
changing ..............................74, 77
checking the pressure ..............30
inflating .....................................27
replacing ..............................33, 78
rotating ......................................36
safety practices .........................34
sidewall information .................37
snow tires and chains ..............42
spare tire ...................................74
terminology ...............................26
tire grades .................................26
treadwear ............................25, 32
Towing .........................................48
trailer towing ............................48
wrecker ......................................83
Index
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