
Note:
Use of any fuel for which the vehicle
was not designed can impair the emission
control system, cause loss of vehicle
performance, and cause damage to the
engine which may not be covered by the
vehicle Warranty.
Do not use:
• Diesel fuel.
• Fuels containing kerosene or paraffin.
• Fuel containing more than 15% ethanol
or E85 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, using leaded fuel is
prohibited by law.
The use of fuels with metallic compounds
such as methylcyclopentadienyl
manganese tricarbonyl (commonly known
as MMT), which is a manganese-based
fuel additive, will impair engine
performance and affect the emission
control system.
RUNNING OUT OF FUEL WARNING: Flow of fuel through
a fuel pump nozzle can produce static
electricity. This can cause a fire if you are
filling an ungrounded fuel container.
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 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 gal (4 L) may be
required.
REFUELING - GASOLINE WARNING:
Fuel vapor burns
violently and a fuel fire can cause severe
injuries. WARNING:
Read and follow all
the instructions on the pump island. WARNING:
Turn off your engine
when you are refueling. WARNING:
Do not smoke if you
are near fuel or refueling your vehicle. WARNING:
Keep sparks, flames
and smoking materials away from fuel. WARNING:
Stay outside your
vehicle and do not leave the fuel pump
unattended when refueling your vehicle.
This is against the law in some places. WARNING:
Keep children away
from the fuel pump; never let children
pump fuel. WARNING:
Do not use personal
electronic devices while refueling.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Fuel and Refueling

WARNING: Wait at least 10
seconds before removing the fuel pump
nozzle to allow any residual fuel to drain
into the fuel tank. WARNING:
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. WARNING: 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.
Fuel Filler Cap WARNING:
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. WARNING:
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.
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.
REFUELING - DIESEL WARNING:
Read and follow all
the instructions on the pump island.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Fuel and Refueling

WARNING: Stay outside your
vehicle and do not leave the fuel pump
unattended when refueling your vehicle. WARNING:
Keep children away
from the fuel pump. Never let children
pump fuel. WARNING:
Wait at least 10
seconds before removing the fuel pump
nozzle to allow any residual fuel to drain
into the fuel tank. WARNING: Do not remove the fuel
pump nozzle from its fully inserted
position when refueling. WARNING: When refueling always
shut the engine off and never allow
sparks or open flames near the fuel tank
filler valve. Never smoke or use a cell
phone while refueling. Fuel vapor is
extremely hazardous under certain
conditions. Avoid inhaling excess fumes. WARNING:
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. WARNING:
The fuel system may
be under pressure. If the fuel filler cap is
venting vapor or if you hear a hissing
sound, wait until it stops before
completely removing the fuel filler cap.
Otherwise, fuel may spray out and injure
you or others. WARNING:
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 designed for
your vehicle. The vehicle Warranty may be
void for any damage to the fuel tank or fuel
system if the correct genuine Ford or
Motorcraft® fuel filler cap is not used.
Fueling Tips
If air is allowed to enter the fuel system the
engine automatically purges any trapped
air. To purge the air sooner: prior to engine
start, prime the system by turning the key
to on for 30 seconds then to off. Repeat
this several times. The engine may run
rough and produce white smoke while air
is in the system. This is normal.
Use only clean, approved containers that
will prevent the entry of dirt or water
whenever you store diesel fuel.
Diesel fuel must not be stored in a
galvanized container. The fuel will dissolve
the zinc in the galvanized container. The
zinc will then remain in the fuel. If you run
the contaminated fuel through the engine,
the zinc will deposit in the fuel injectors
causing expensive-to-repair damage.
Diesel fuel dispensing nozzle fill rate
Your vehicle has a fuel fill pipe that is able
to accept fuel up to
20 gal (76 L) per
minute from an 1.2 in (30 mm)
fuel-dispensing nozzle. Pumping fuel at
greater flow rates may result in premature
nozzle shut-off or spit back.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Fuel and Refueling

Truck stops have pumps and nozzles
designed for larger, heavy-duty trucks.
When refueling at truck stops: if the nozzle
shuts off repeatedly when refueling, wait
5–
10 seconds; then use a slower rate of
flow, do not depress the nozzle trigger as
far.
Refueling
When fueling your vehicle do the following:
1. Fully open the fuel tank filler door until
it engages and remove the fuel tank
filler cap. The fuel tank filler cap has
an indexed design with a 1/4 turn
on/off feature. Carefully turn the filler
cap counterclockwise until it spins off. 2. Insert the fuel pump nozzle up to the
first notch on the nozzle A. Keep it
resting on the cover of the fuel tank
filler pipe opening. 3.
Hold the fuel pump nozzle in the lower
position B when refueling. Holding the
fuel pump nozzle in the higher position
A may affect the flow of fuel and shut
off the fuel pump nozzle before the fuel
tank is full. 4.
Slightly raise the fuel pump nozzle and
then slowly remove it.
5. Replace the fuel tank filler cap and close the fuel tank filler door.
Note: Do not attempt to start the engine
if you have filled the fuel tank with incorrect
fuel. Incorrect fuel use can cause damage
not covered by the vehicle Warranty. Have
your vehicle checked immediately.
191
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Fuel and RefuelingE139202
A E139203
A
B E119081

Dual Fuel Tanks (If Equipped)
Your vehicle may have a dual fuel tank
delivery system which operates
independently and automatically. The fuel
pump in the front fuel tank delivers fuel to
the engine. When the fuel level in the front
fuel tank drops below three quarter full,
fuel automatically transfers from the rear
fuel tank to the front fuel tank. Whenever
there is fuel in the rear fuel tank, the front
fuel tank level remains between half and
three quarter full.
Note: If your vehicle runs out of fuel, you
must add fuel to the front fuel tank to
restart the engine.
FUEL CONSUMPTION
Advertised Capacity
The advertised capacity is the maximum
amount of fuel that you can add to the fuel
tank after running out of fuel. Included in
the advertised capacity is an empty
reserve. The empty reserve is an
unspecified amount of fuel that remains
in the fuel tank when the fuel gauge
indicates empty.
Note: The amount of fuel in the empty
reserve varies and should not be relied upon
to increase driving range.
Fuel Economy
Your vehicle calculates fuel economy
figures through the trip computer average
fuel function. See
General Information
(page 112).
The first
1,000 mi (1,500 km) of driving is
the break-in period of the engine. A more
accurate measurement is obtained after
2,000 mi (3,000 km)
. Impacting Fuel Economy
•
Incorrect tire inflation pressures.
• Fully loading your vehicle.
• Carrying unnecessary weight.
• Adding certain accessories to your
vehicle such as bug deflectors, rollbars
or light bars, running boards and ski
racks.
• Using fuel blended with alcohol. See
Fuel Quality
(page 184).
• Fuel economy may decrease with lower
temperatures.
• Fuel economy may decrease when
driving short distances.
• You may get better fuel economy when
driving on flat terrain than when driving
on hilly terrain.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Fuel and Refueling

WARNING: Only refill the diesel
exhaust fluid tank in a well ventilated
area. When you remove the diesel
exhaust fluid tank filler cap or a diesel
exhaust fluid container cap, ammonia
vapors may escape. Ammonia vapors
can be irritating to skin, eyes and mucous
membranes. Inhaling ammonia vapors
can cause burning to the eyes, throat and
nose and cause coughing and watery
eyes. The diesel exhaust fluid tank has a blue
filler cap. The tank is behind the left-hand
front wheel. Fill the tank using a fluid pump
at a diesel exhaust fluid filling station or a
diesel exhaust fluid container. We
recommend Motorcraft® diesel exhaust
fluid. See Capacities and Specifications
(page
426).
Only use diesel exhaust fluid that is
certified by the American Petroleum
Institute (API). Non-certified diesel exhaust
fluid use can cause damage not covered
by the vehicle Warranty.
Note:
Do not put diesel exhaust fluid in the
fuel tank. This can cause damage not
covered by the vehicle Warranty.
You can purchase diesel exhaust fluid at
an authorized dealer, most highway truck
stops or you can contact roadside
assistance for help in finding a retailer that
sells diesel exhaust fluid. In addition, there
is a government website to help you find
the nearest location to purchase diesel
exhaust fluid:
http://www.discoverdef.com.
Filling the Diesel Exhaust Fluid Tank
Using a Fuel Station Pump
Filling the diesel exhaust fluid tank using
a nozzle is similar to fuel fill. The nozzle
shuts off automatically when the tank is
full.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Engine Emission ControlE226045 E163354)E163354

The fuel pump shutoff stops the flow of
fuel to the engine in the event of a
moderate to severe crash. Not every
impact causes a shutoff.
Should your vehicle shut off after a crash,
you may restart your vehicle.
If your vehicle has a key system:
1. Switch off the ignition.
2. Switch to start position.
3. Switch off the ignition.
4.
Switch on the ignition to re-enable the
fuel pump.
5. If the vehicle does not start, repeat steps 1 through 4.
If your vehicle has a push button start
system:
1. Press START/STOP to switch off your
vehicle.
2. Press the brake pedal and START/STOP
to switch on your
vehicle.
3. Remove your foot from the brake pedal
and press
START/STOP to switch off
your vehicle.
4. You can attempt to start the vehicle by pressing the brake pedal and
START/STOP
, or press START/STOP
without pressing the brake pedal.
5. If the vehicle does not start, repeat steps 1 through 4.
JUMP STARTING THE VEHICLE WARNING:
Batteries normally
produce explosive gases which can
cause personal injury. Therefore, do not
allow flames, sparks or lighted
substances to come near the battery.
When working near the battery, always
shield your face and protect your eyes.
Always provide correct ventilation. WARNING:
Keep batteries out of
reach of children. Batteries contain
sulfuric acid. Avoid contact with skin,
eyes or clothing. Shield your eyes when
working near the battery to protect
against possible splashing of acid
solution. In case of acid contact with skin
or eyes, flush immediately with water for
a minimum of 15 minutes and get prompt
medical attention. If acid is swallowed,
call a physician immediately. WARNING:
Use only adequately
sized cables with insulated clamps.
Preparing Your Vehicle
Do not attempt to push-start your
automatic transmission vehicle.
Note: Attempting to push-start a vehicle
with an automatic transmission may cause
transmission damage.
Note: Use only a 12-volt supply to start your
vehicle.
Note: Do not disconnect the battery of the
disabled vehicle as this could damage the
vehicle electrical system.
Park the booster vehicle close to the hood
of the disabled vehicle, making sure the
two vehicles do not touch.
Connecting the Jumper Cables WARNING:
Do not attach the
cables to fuel lines, engine rocker covers,
the intake manifold or electrical
components as grounding points. Stay
clear of moving parts. To avoid reverse
polarity connections, make sure that you
correctly identify the positive (+) and
negative (-) terminals on both the
disabled and booster vehicles before
connecting the cables.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Roadside Emergencies

Protected Component
Fuse Rating
Fuse or Relay
Number
Horn relay.
—
39
Supplemental air heater bank #2 relay.
—
40
Glow plugs.
25A 2
41
Trailer tow lighting module (if equipped).
40A 2
42
Front blower motor.
40A 2
43
Voltage quality.
50A 3
44
Body control module power.
Active front steering.
60A 3
45
Supplemental air heater bank #2.
50A 3
46
Cooling fan.
50A 3
47
Supplemental air heater bank #3.
Body control module run power 1 bus.
50A 3
48
Inverter.
60A 3
49
Body control module run power 2 bus.
50A 3
50
Body control module B+ feed.
60A 3
51
Anti-lock brake system pump.
60A 3
52
Supplemental air heater bank #1.
50A 3
53
Trailer brake control module.
30A 3
54
Climate controlled seat module.
30A 3
55
Auxiliary lighting module.
40A 3
56
Power running boards.
30A 2
57
Compressed natural gas fuel control
module relay.
30A 2
58
321
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201804, Fourth-Printing Fuses