2023 FORD F650/750 fuel cap

• Sustained, high-speed driving at the
gross vehicle weight rating.
• Use of fuels with sulfur content other
than ultra-low sulfur diesel (ULSD).
• Use of high-sulfur diesel fuel.
Only use engine oil that meets our
specifications. See Capacities and
Specifications (page 288).
OIL CHANGE INDICATOR
RESET
Base Cluster
Use the information display controls on
the steering wheel to reset the oil change
indicator.
From the main menu scroll to:
Action and Description Message
Press the right arrow button,
then from this menu scroll
to the following message. Settings
Press the down arrow
button, then from this menu
scroll to the following
message. Vehicle
Press the right arrow button,
then from this menu scroll
to the following message. Oil Life
Reset
Press and hold the OK
button until the instrument
cluster displays the
following message. Oil Life
Hold to
Reset
Press and hold the OK
button until the instrument
cluster displays the
following message. Oil Life
Hold OK
to Reset
Action and Description Message
Reset Complete
If the instrument cluster
displays the following
message, repeat the
process.
Reset Cancelled
High Series Cluster
Use the information display controls on
the steering wheel to reset the oil change
indicator.
From the main menu scroll to:
Action and Description Message
Press the down arrow
button, then from this menu
scroll to the following
message. Truck Info
Press the OK button. Mainten-
ance
Monitor
Press the down arrow
button, then from this menu
scroll to the following
message. Oil Life:
xxx%
Press the OK button. Oil Life
Press and hold the OK
button until the instrument
cluster displays the
following message. Oil Life
Hold OK to
Reset
Oil Life: 100%
When the oil change indic-
ator resets, the instrument
cluster displays 100%.
Repeat the process if the oil
change indicator does not
reset.
227
Maintenance

3. Rotate the drain counterclockwise until
the O-ring is visible. Allow the diesel
fuel conditioner module to drain for
approximately 25 seconds or until
clean fuel is observed. Rotate the drain
clockwise to tighten it. If no liquid
drains, there may be a clog in the drain.
Have the conditioner module serviced
by an authorized dealer.
4. Make sure that you fully tighten the
drain valve and then remove the
container from under your vehicle.
5. Restart the engine. If the Water in Fuel
Drain Filter message and light
continues to illuminate, have the fuel
system checked and repaired.
ENGINE COOLANT CHECK -
6.7L DIESEL
WARNING: Do not remove the
coolant reservoir cap when the cooling
system is hot. Wait 10 minutes for the
cooling system to cool down. Cover the
coolant reservoir cap with a thick cloth
to prevent the possibility of scalding and
slowly remove the cap. Failure to follow
this instruction could result in personal
injury.
WARNING: Do not put coolant in
the windshield washer reservoir. If
sprayed on the windshield, coolant could
make it difficult to see through the
windshield.
WARNING: To reduce the risk of
personal injury, make sure the engine is
cool before unscrewing the coolant
pressure relief cap. The cooling system
is under pressure. Steam and hot liquid
can come out forcefully when you loosen
the cap slightly.
WARNING: Do not add coolant
further than the MAX mark.
When the engine is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance (page 319).
Note:Make sure that the coolant level is
between the MIN and MAX marks on the
coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the MAX mark.
Maintain coolant concentration within
48% to 50%, which equates to a freeze
point between -30°F (-34°C) and -34°F
(-37°C). Coolant concentration should be
checked using a refractometer. We do not
recommend the use of hydrometers or
coolant test strips for measuring coolant
concentration.
Adding Coolant
WARNING: Do not add engine
coolant when the engine is hot. Failure
to follow this instruction could result in
personal injury.
WARNING: Do not remove the
coolant reservoir cap when the cooling
system is hot. Wait 10 minutes for the
cooling system to cool down. Cover the
coolant reservoir cap with a thick cloth
to prevent the possibility of scalding and
slowly remove the cap. Failure to follow
this instruction could result in personal
injury.
Note: Automotive fluids are not
interchangeable. Do not use coolant or
windshield washer fluid outside of its
specified function and vehicle location.
233
Maintenance

•Robinair® Coolant and Battery
Refractometer 75240 –
Recommended refractometer to test
coolant concentration. (Rotunda tool
part number: ROB75240).
•Rotunda 328-R071–ELC (Antifreeze
Coolant ELC Contamination Kit) –
Evaluates the corrosion inhibitor
additive strength.
• The first step is once the coolant
concentration is verified to be in the
range of 40 – 60%. Test the
corrosion inhibitor additive
strength. If the test results show
the cooling system does not have
excessive contamination and the
corrosion inhibitor additive strength
is sufficient then no further action
is required. If the test results for the
Engine Coolant Circuit show the
cooling system has excessive
contamination or the corrosion
inhibitor additive strength is not
sufficient then add 47 fl oz (1.4 L)
of Motorcraft Specialty Orange
Engine Coolant Revitalizer. If the
test results for the Secondary
Coolant Circuit show the cooling
system has excessive
contamination or the corrosion
inhibitor additive strength is not
sufficient then add 16 fl oz (0.47 L)
of Motorcraft Specialty Orange
Engine Coolant Revitalizer.
•Motorcraft Specialty Orange Engine
Coolant Revitalizer – Additive to
boost the corrosion inhibitor level
based upon the test results of the
Antifreeze Coolant ELC Contamination
Kit. The Revitalizer may be added two
times over the life of the coolant. If
additional dosages are required, the
cooling system must be flushed and
refilled per the instructions in the
Workshop Manual.Make sure to follow the proper coolant and
additive specifications. See Capacities
and Specifications (page 288).
Coolant Change
At specific mileage intervals, as listed in
the scheduled maintenance information,
the coolant should be changed. The
information display may display a message
to change coolant at this time. Add
prediluted coolant approved to the correct
specification. See Capacities and
Specifications (page 288).
Engine-driven Cooling Fan (Fan
Clutch)
Your vehicle may have an engine driven
cooling fan drive (also called a fan clutch).
This fan drive changes the fan speed to
match the vehicle’s changing cooling air
flow requirements. Fan speed, fan noise
level and fuel consumption all will increase
based on the driving conditions that
include trailer towing, hill climbing, heavy
loads, high speed and high ambient
temperature, individually or in combination.
The fan drive is designed to provide the
minimum fan speed (and resulting
minimum fan noise and fuel consumption)
required to meet the ever changing vehicle
cooling air flow requirements. You will hear
the amount of fan noise increasing and
decreasing as the engine power
requirements and vehicle driving conditions
change as you drive. This is to be expected
as being normal to the operation of your
vehicle. High levels of fan noise might also
be heard when your engine is first started,
and should normally decrease after driving
for a short time.
237
Maintenance

Do not use the following as a coolant
substitute:
• Alcohol.
• Methanol.
• Brine.
• Any coolant mixed with alcohol or
methanol antifreeze.
Alcohol and other liquids can cause engine
damage from overheating or freezing.
Do not add extra inhibitors or additives to
the coolant. These can be harmful and
compromise the corrosion protection of
the coolant.
Recycled Coolant
We do not recommend the use of recycled
coolant as an approved recycling process
is not yet available.
Dispose of used engine coolant in an
appropriate manner. Follow your
community’s regulations and standards
for recycling and disposing of automotive
fluids.
Severe Climates
If you drive in extremely cold climates:
• It may be necessary to increase the
coolant concentration above 50%.
• A coolant concentration of 60%
provides improved freeze point
protection. Coolant concentrations
above 60% decrease the overheat
protection characteristics of the
coolant and may cause engine
damage.If you drive in extremely hot climates:
• You can decrease the coolant
concentration to 40%.
• Coolant concentrations below 40%
decrease the freeze and corrosion
protection characteristics of the
coolant and may cause engine
damage.
Vehicles driven year-round in non-extreme
climates should use prediluted engine
coolant for optimum cooling system and
engine protection.
Coolant Change
Change the coolant at specific mileage
intervals as listed in the scheduled
maintenance information. The information
display may display a message to change
coolant at this time. Add prediluted
coolant approved to the correct
specification. See Capacities and
Specifications (page 288).
Engine-driven Cooling Fan (Fan
Clutch)
Your vehicle comes with an engine driven
cooling fan drive, also called a fan clutch.
This fan drive changes the fan speed to
match the vehicle’s changing cooling air
flow requirements. Fan speed, fan noise
level and fuel consumption all will increase
based on the driving conditions that
include trailer towing, hill climbing, heavy
loads, high speed and high ambient
temperature, individually or in combination.
The fan drive is designed to provide the
minimum fan speed, and resulting
minimum fan noise and fuel consumption
required to meet the ever changing vehicle
cooling air flow requirements. You will hear
the amount of fan noise increasing and
decreasing as the engine power
requirements and vehicle driving conditions
240
Maintenance

CHANGING THE 12V BATTERY
WARNING: This vehicle may be
equipped with more than one battery,
removal of cable from only one battery
does not disconnect the vehicle
electrical system. Be sure to disconnect
cables from all batteries when
disconnecting power. Failure to do so
may cause serious personal injury or
property damage.
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 proper ventilation.
WARNING: When lifting a
plastic-cased battery, excessive pressure
on the end walls could cause acid to flow
through the vent caps, resulting in
personal injury and damage to the
vehicle or battery. Lift the battery with a
battery carrier or with your hands on
opposite corners.
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.
Note:If your battery has a cover/shield,
make sure it is reinstalled after the battery
has been cleaned or replaced.Note:Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after handling.
Note:Electrical or electronic accessories
or components added to the vehicle by the
dealer or the owner may adversely affect
battery performance and durability.
Your vehicle is equipped with a Motorcraft
maintenance-free battery which normally
does not require additional water during
its life of service.
For longer, trouble-free operation, keep the
top of the battery clean and dry. Also,
make certain the battery cables are always
tightly fastened to the battery terminals.
If you see any corrosion on the battery or
terminals, remove the cables from the
terminals and clean with a wire brush. You
can neutralize the acid with a solution of
baking soda and water.
It is recommended that the negative
battery cable terminal be disconnected
from the battery if you plan to store your
vehicle for an extended period of time.
Because your vehicle’s engine is
electronically controlled by a computer,
some control conditions are maintained
by power from the battery. When the
battery is disconnected or a new battery
is installed, the engine must relearn its idle
and fuel trim strategy for optimum
driveability and performance. To begin this
process
1. With the vehicle at a complete stop,
set the parking brake.
2. Put the gearshift in park (P) or neutral
(N) and turn off all accessories.
3. Start the engine. Run the engine until
it reaches normal operating
temperature.
4. Allow the engine to idle for at least one
minute.
246
Maintenance

WASHER FLUID CHECK
WARNING: If you operate your
vehicle in temperatures below 40°F
(5°C), use washer fluid with antifreeze
protection. Failure to use washer fluid
with antifreeze protection in cold
weather could result in impaired
windshield vision and increase the risk
of injury or accident.
Add fluid to fill the reservoir if the level is
low. Only use a washer fluid that meets
Ford specifications. See Capacities and
Specifications (page 288).
State or local regulations on volatile
organic compounds may restrict the use
of methanol, a common windshield washer
antifreeze additive. Washer fluids
containing non-methanol antifreeze
agents should be used only if they provide
cold weather protection without damaging
the vehicle’s paint finish, wiper blades or
washer system.
FUEL FILTER - 7.3L
Your vehicle is equipped with a lifetime
fuel filter that is integrated with the fuel
tank. Regular maintenance or replacement
is not needed.
CHECKING THE WIPER
BLADES
E142463
Run the tip of your fingers over the edge of
the blade to check for roughness.
Clean the wiper blades with washer fluid
or water applied with a soft sponge or
cloth.
CHANGING THE WIPER
BLADES
You can manually move the wiper arms
when the ignition is off. This allows for ease
of blade replacement and cleaning under
the blades.
E1665804E11166565656565656565804804804804804804804804
1. Pull the wiper blade and arm away
from the glass.
A
E165794
2. Release the wiper blade lock (A) and
separate the wiper blade from the
wiper arm.
3. Install in the reverse order.
249
Maintenance

ENGINE SPECIFICATIONS - 6.7L DIESEL
6.7L V8 Diesel Engine Engine
406 in³ (6,651 cm³) Displacement.
Ultra Low Sulfur Diesel up to B20 Required fuel.
1-3-7-2-6-5-4-8 Firing order.
15.8:1 Compression ratio.
Drivebelt Routing
Single Alternator
E224819
Single Alternator With Air Brake
Compressor
E224825
Drivebelt closest to the engine. A
Drivebelt furthest from the
engine. B
288
Capacities and Specifications

Dual Alternator
E224820
Dual Alternator With Air Brake
Compressor
E224826
Drivebelt closest to the engine. A
Drivebelt furthest from the
engine. B
Note:The belt routings show vehicles with
air conditioning. When vehicles do not have
air conditioning, an idler pulley is in place of
the A/C compressor.
ENGINE SPECIFICATIONS - 7.3L
7.3L V8 Engine Engine
445 in³ (7,293 cm³) Displacement.
Minimum 87 octane Required fuel.
1-5-4-8-6-3-7-2 Firing order.
Coil near spark plug with spark plug wire Ignition system.
0.049 in (1.25 mm) - 0.053 in (1.35 mm) Spark plug gap.
10.5:1 Compression ratio.
289
Capacities and Specifications