User Manual - Page 149

For F-450 2016.

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We recommend regular unleaded gasoline
with a pump (R+M)/2 octane rating of 87.
Some stations offer fuels posted as regular
with an octane rating below 87, particularly
in high altitude areas. We do not
recommend fuels with an 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
engine 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. With
keyless ignition, just start the engine.
Crank time will be longer than usual.
Normally, adding 1.06 gal (4 L) of fuel
is enough to restart the engine. If the
vehicle is out of fuel and on a steep
grade, more than 1.06 gal (4 L) may be
required.
REFUELING
WARNINGS
Fuel vapor burns violently and a fuel
fire can cause severe injuries.
Read and follow all the instructions
on the pump island.
WARNINGS
Turn off your engine when you are
refueling.
Do not smoke if you are near fuel or
refueling your vehicle.
Keep sparks, flames and smoking
materials away from fuel.
Stay outside your vehicle and do not
leave the fuel pump unattended
when refueling your vehicle. This is
against the law in some places.
Keep children away from the fuel
pump; never let children pump fuel.
Do not use personal electronic
devices while refueling.
Wait at least 10 seconds before
removing the fuel pump nozzle to
allow any residual fuel to drain into
the fuel tank.
Stop refueling after the fuel pump
nozzle automatically shuts off for the
second time. Failure to follow this
will fill the expansion space in the fuel tank
and could lead to fuel overflowing.
Do not remove the fuel pump nozzle
from its fully inserted position when
refueling.
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.
146
Super Duty (TFA) Canada/United States of America, enUSA, First Printing
Fuel and Refueling
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