Fuel Quality; Running Out Of Fuel - Ford F-Series Super Duty Class A 2015 Owner's Manual

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 gasoline or
UNLEADED gasoline blended with a
maximum of 15% ethanol in your gasoline
vehicle. If your vehicle is a Flex Fuel Vehicle
(FFV), it will have a yellow bezel placed
over the fuel fill inlet.
Do not use:
• fuels containing more than 15%
ethanol or E-85 fuel
• fuels containing methanol
• fuels containing metallic based
additives, including manganese-based
compounds
• fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT)
• leaded-fuel (The use of leaded fuel is
prohibited by law)
Note: Use of any fuel other than the
recommended fuel can cause powertrain
damage, impair the emission control system
or cause loss of vehicle performance. Any
damage to the vehicle that is caused by the
use of fuel not recommended will not be
covered under warranty.
Octane Recommendations
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Fuel and Refueling
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:
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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. With
keyless ignition, just start the engine.
Crank time will be longer than usual.
Normally, adding 1 gallon (3.8 liters) of
fuel is enough to restart the engine. If
the vehicle is out of fuel and on a steep
grade, more than 1 gallon (3.8 liters)
may be required.
The service engine soon indicator may
come on. For more information on the
service engine soon indicator, See
Warning Lamps and Indicators
(page 13).