FORD 2013 Expedition v.2 - Manual (Page 206)

It is best not to alternate repeatedly between gasoline and E85. If you do
switch fuels, it is recommended that you add as much fuel as
possible—at least half a tank. Do not add less than five gallons
(18.9 liters) when refueling. You should drive the vehicle immediately
after refueling for at least 5 miles (8 kilometers) to allow the vehicle to
adapt to the change in ethanol concentration. If you exclusively use E85
fuel, it is recommended to fill the fuel tank with regular unleaded
gasoline at each scheduled oil change.
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. Do not use fuels with a posted octane
rating below 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.
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 the Instrument Cluster
chapter.
See Settings in the Instrument Cluster chapter for information on
calculating DTE (Distance to empty).
87
(R+M)/2 METHOD
Fuel and Refueling 205
2013 Expedition (exd)
Owners Guide gf, 2nd Printing, October 2012
USA (fus)