Ford Super Duty (2018 year). Manual — part 87

E170684

To avoid fluid contamination, the reservoir
cap must remain in place and fully tight,
unless you are adding fluid.

Only use fluid that meets Ford
specifications. See Capacities and
Specifications (page 421).

POWER STEERING FLUID
CHECK

Check the power steering fluid. See
Scheduled Maintenance (page 581). If
adding fluid is necessary, use only
MERCON LV ATF

Note: This procedure is for vehicles with
gasoline engines. Vehicles with diesel
engines are similar. See Under Hood
Overview in your diesel supplement.

Check the fluid level when it is at ambient
temperature.

1.

Check the fluid level in the reservoir. It
should be between the MIN and MAX
range. Do not add fluid if the level is
within this range.

2. If the fluid level is low, add fluid to bring

the fluid level up to between the MIN
and MAX range.

3. Switch the engine on.
4. While the engine idles, turn the steering

wheel left and right several times.

5. Switch the engine off.
6. Recheck the fluid level in the reservoir.

Do not add fluid if the level is between
the MIN and MAX range.

7.

If the fluid is low, add fluid in small
amounts, continuously checking the
level until it is between the MIN and
MAX range. For proper fluid type, See
Capacities and Specifications (page
421). Be sure to put the cap back on the
reservoir.

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 421).

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.

DRAINING THE FUEL FILTER
WATER TRAP - 6.7L DIESEL

WARNING

Do not dispose of fuel in the
household refuse or the public
sewage system. Use an authorized

waste disposal facility.

Your vehicle has a diesel fuel conditioner
module. The module is mounted between
the outboard side of the fuel tank and the
frame rail.

Note: The module is at the front of the fuel
tank or at the front of the aft-axle fuel tank
on some models.

You should drain water from the
module assembly whenever the
warning light illuminates or a

message appears in the information
display advising you to drain the water
separator. This occurs when approximately
6.76 fl oz (200 ml) of water accumulates
in the module. If you allow the water level
to exceed this level, the water may pass
through to the engine and may cause fuel
injection equipment damage.

Filter Location

Use the tables below to find the location
of your filter.

Pick-up Truck

Filter Location

Box Length

Cab Type

Left side of fuel tank.

8 ft (2.4 m)

Regular.

6.75 ft (2.057 m)

SuperCab.

In front of fuel tank.

8 ft (2.4 m)

6.75 ft (2.057 m)

Super Crew Cab.

Left side of fuel tank.

8 ft (2.4 m)

Chassis Cab

Filter Location

Fuel Tank Type

Cab Type

Right side of fuel tank.

Single midship fuel tank

Chassis Cab.

Right side of midship fuel

tank.

Aft axle/midship fuel tanks

Chassis Cab.

Front of fuel tank.

Single aft axle fuel tank

Chassis Cab.

Draining the Diesel Fuel
Conditioner Module

1.

Switch the engine off.

2. Access the underside of your vehicle.

E226475

2

3. The diesel fuel conditioner module is

on the left-hand frame rail.

3

E226212

4. Drain the diesel fuel conditioner

module. Turn the drain plug
counterclockwise until it stops. Do not
use any tools to loosen the drain plug.
Drain the filter, approximately 0.5 gal
(2 L), into an appropriate container.
Do not re-use the fuel drained from the
module.

5. Tighten the drain plug, turn it clockwise

until it stops and you feel a strong
resistance. Do not use any tools to
tighten the drain plug.

FUEL FILTER - 6.2L/6.8L

Your vehicle is equipped with a lifetime
fuel filter that is integrated with the fuel
tank. Regular maintenance or replacement
is not needed.

CHANGING THE 12V BATTERY

WARNINGS

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.

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.

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.

Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after

handling.

This vehicle may have more than one
battery. Removing the battery cables
from only one battery does not

disconnect your vehicle electrical system.
Make sure you disconnect the battery
cables from all batteries when
disconnecting power. Failure to do so may
cause serious personal injury or property
damage.

Your vehicle is fitted with a Motorcraft
maintenance-free battery which normally
does not require additional water.

When a battery replacement is required,
you must use a recommended
replacement battery that matches the
electrical requirements of the vehicle.

Note: After cleaning or replacing the
battery, make sure you reinstall the battery
cover or shield.

Note: If you add electrical accessories or
components to the vehicle, it may adversely
affect the low voltage battery performance
and durability. This may also affect the
performance of other electrical systems in
the vehicle.

For longer, trouble-free operation, keep the
top of the battery clean and dry.

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.

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. Flexible fuel
vehicles (FFV) must also relearn the
ethanol content of the fuel for optimum
driveability and performance.

To restore the settings, do the following:

1.

Apply the parking brake.

2. Shift into park (P) or neutral (N).

3. Switch off all accessories.

4. Press the brake pedal and start your

vehicle.