2013 FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS octane

FUEL QUALITY
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.
Choosing the Right Fuel
Use only UNLEADED fuel or UNLEADED fuel blended with a maximum
of 15% ethanol. Do not use fuel ethanol (E85), diesel fuel, fuel-methanol,
leaded fuel or any other fuel because it could damage or impair the
emission control system. The use of leaded fuel is prohibited by law.
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.
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.
87(R+M)/2 METHOD
32Fuel and Refueling
2013 Motorhome(mot)
Owners Guide gf, 1st Printing
USA(fus)

ENGINE SPECIFICATIONS
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
Capacities and Specifications127
2013 Motorhome(mot)
Owners Guide gf, 1st Printing
USA(fus)

lubrication specifications .......128
refill capacities ........................128
service points ......................84–85
Engine oil
checking and adding ................86
dipstick ......................................86
filter, specifications ................132
refill capacities ........................128
specifications ..........................128
Event data recording ....................6
Exhaust fumes ............................29
F
Fail safe cooling ..........................90
Fluid capacities .........................128
Fuel
cap .............................................33
capacity ...................................128
choosing the right fuel .............32
filling your vehicle with fuel ....33
filter, specifications ..........97, 132
octane rating .....................32, 127
quality ........................................32
running out of fuel ...................32
safety information relating to
automotive fuels .......................30
Fuses ................................74–75, 79
G
Gas cap (see Fuel cap) ..............33
Gauges .........................................16
H
Hazard flashers ...........................63
Headlamps
flash to pass ..............................13
high beam .................................13I
Ignition .................................28, 127
Information displays ...................22
Inspection/maintenance (I/M)
testing ..........................................38
Instrument panel
cluster ........................................18
J
Jump-starting your vehicle ........64
K
Keys
positions of the ignition ...........28
L
Lamps
headlamps, flash to pass ..........13
Lights, warning and indicator ....18
Loading instructions ...................53
Load limits ...................................48
Lubricant specifications ...........128
Lug nuts ....................................126
M
Message center ...........................22
english/metric button ...............24
system check button ................24
warning messages .....................24
Motorcraftparts ......................132
O
Octane rating ..............................32
154Index
2013 Motorhome(mot)
Owners Guide gf, 1st Printing
USA(fus)