Fuel Consumption - Ford 2016 SUPER DUTY Owner's Manual

Fuel Filler Cap
WARNINGS
The fuel system may be under
pressure. If you hear a hissing sound
near the fuel filler door, do not refuel
until the sound stops. Otherwise, fuel may
spray out, which could cause serious
personal injury.
If you do not use the proper fuel filler
cap, excessive pressure or vacuum
in the fuel tank may damage the fuel
system or cause the fuel cap to disengage
in a collision, which may result in possible
personal injury.
Note: If you must replace the fuel filler cap,
replace it with a fuel filler cap that is
designed for your vehicle. The customer
warranty may be void for any damage to the
fuel tank or fuel system if the correct
genuine Ford, Motorcraft or other certified
fuel filler cap is not used.
Your fuel tank filler cap has an indexed
design with a 1/4th turn on and off feature.
When fueling your vehicle:
1. Put your vehicle in park (P).
2. Switch the engine off.
3. Carefully turn the filler cap
counterclockwise until it spins off.
4. Pull to remove the cap from the fuel
filler pipe.
5. To install the cap, align the tabs on the
cap with the notches on the filler pipe.
6. Turn the filler cap clockwise 1/4 of a
turn clockwise until it clicks at least
once.
If the Check Fuel Cap light or a Check Fuel
Cap message appears in the instrument
cluster and stays on after you start the
engine, you may not have installed the fuel
filler properly.
Super Duty (TFA) Canada/United States of America, enUSA, First Printing
Fuel and Refueling
If the fuel cap light remains on, at the next
opportunity, safely pull off of the road,
remove the fuel filler cap, align the cap
properly and reinstall it. The check fuel cap
light or Check fuel cap message may not
reset immediately. It may take several
driving cycles for the indicators to turn off.
A driving cycle consists of an engine
start-up (after four or more hours with the
engine off) followed by normal city and
highway driving.

FUEL CONSUMPTION

Empty reserve is the amount of fuel
remaining in the 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.
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Filling the Tank
For consistent results when filling the fuel
tank:
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147
The usable capacity of the fuel tank is
the amount of fuel that can be added
into the tank after the gauge indicates
empty
The advertised capacity is the total fuel
tank size. See Capacities and
Specifications (page 303). It is the
combined usable capacity plus the
empty reserve.
Due to the empty reserve, you may not
be able to refuel the full amount of the
advertised capacity of the fuel tank
even when the fuel gauge reads empty.
Turn the ignition off before fueling; an
inaccurate reading results if the engine
is left running.
Use the same fill rate
(low-medium-high) each time the tank
is filled.
Allow no more than two automatic
click-offs when filling.