Ford Super Duty (2018 year). Manual — part 48

E139202

A

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.

E139203

A

B

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.

E119081

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.

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

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 114).

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. See
Towing a Trailer (page 273).

•

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 188).

•

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.

EMISSION LAW

WARNING

Do not remove or alter the original
equipment floor covering or
insulation between it and the metal

floor of the vehicle. The floor covering and
insulation protect occupants of the vehicle
from the engine and exhaust system heat
and noise. On vehicles with no original
equipment floor covering insulation, do not
carry passengers in a manner that permits
prolonged skin contact with the metal
floor. Failure to follow these instructions
may result in fire or personal injury.

U.S. federal laws and certain state laws
prohibit removing or rendering inoperative
emission control system components.
Similar federal or provincial laws may
apply in Canada. We do not approve of any
vehicle modification without first
determining applicable laws.

Tampering with emissions
control systems including
related sensors or the Diesel

Exhaust Fluid system can result in reduced
engine power and the illumination of the
service engine soon light.

Tampering With a Noise Control
System

Federal laws prohibit the following acts:
•

Removal or rendering inoperative by
any person other than for purposes of
maintenance.

•

Repair or replacement of any device or
element of the design incorporated into
a new vehicle for the purpose of noise
control prior to its sale or delivery to
the ultimate purchaser or while it is in
use.

•

The use of the vehicle after any person
removes or renders inoperative any
device or element of the design.

The U.S. Environmental Protection Agency
may presume to constitute tampering as
follows:
•

Removal of hood blanket, fender apron
absorbers, fender apron barriers,
underbody noise shields or acoustically
absorptive material.

•

Tampering or rendering inoperative the
engine speed governor, to allow engine
speed to exceed manufacturer
specifications.

If the engine does not start, runs rough,
experiences a decrease in engine
performance, experiences excess fuel
consumption or produces excessive
exhaust smoke, check for the following:
•

A plugged or disconnected air inlet
system hose.

•

A plugged engine air filter element.

•

Water in the fuel filter and water
separator.

•

A clogged fuel filter.

•

Contaminated fuel.

•

Air in the fuel system, due to loose
connections.

•

An open or pinched sensor hose.

•

Incorrect engine oil level.

•

Incorrect fuel for climatic conditions.

•

Incorrect engine oil viscosity for
climactic conditions.

Note: Some vehicles have a lifetime fuel
filter that is integrated with the fuel tank.
Regular maintenance or replacement is not
needed.

Note: If these checks do not help you
correct the concern, have your vehicle
checked as soon as possible.

Noise Emissions Warranty,
Prohibited Tampering Acts and
Maintenance

On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lb
(4,536 kg) Gross Vehicle Weight Rating
(GVWR). The preceding statements
concerning prohibited tampering acts and
maintenance, and the noise warranty
found in the Warranty Guide, are
applicable to complete chassis cabs over
10,000 lb (4,536 kg) GVWR.

CATALYTIC CONVERTER

WARNINGS

Do not park, idle or drive your vehicle
on dry grass or other dry ground
cover. The emission system heats up

the engine compartment and exhaust
system, creating the risk of fire.

The normal operating temperature
of the exhaust system is very high.
Never work around or attempt to

repair any part of the exhaust system until
it has cooled. Use special care when
working around the catalytic converter.
The catalytic converter heats up to a very
high temperature after only a short period
of engine operation and stays hot after the
engine is switched off.

WARNINGS

Exhaust leaks may result in entry of
harmful and potentially lethal fumes
into the passenger compartment. If

you smell exhaust fumes inside your
vehicle, have your vehicle inspected
immediately. Do not drive if you smell
exhaust fumes.

Your vehicle has various emission control
components and a catalytic converter that
enables it to comply with applicable
exhaust emission standards.

To make sure that the catalytic converter
and other emission control components
continue to work properly:
•

Do not crank the engine for more than
10 seconds at a time.

•

Do not run the engine with a spark plug
lead disconnected.

•

Do not push-start or tow-start your
vehicle. Use booster cables. See Jump
Starting the Vehicle (page 306).

•

Use only the specified fuel listed.

•

Do not switch the ignition off when your
vehicle is moving.

•

Avoid running out of fuel.

•

Have the items listed in scheduled
maintenance information performed
according to the specified schedule.

Note: Resulting component damage may
not be covered by the vehicle Warranty.

The scheduled maintenance items listed
in scheduled maintenance information are
essential to the life and performance of
your vehicle and to its emissions system.

If you use anything other than Ford,
Motorcraft or Ford-authorized parts for
maintenance replacements or for service
of components affecting emission control,
such non-Ford parts should be equivalent
to genuine Ford Motor Company parts in
performance and durability.