2021 FORD MUSTANG transmission fluid

Customer Assistance
Getting the Services You Need
..............238
In California (U.S. Only) ...........................
239
The Better Business Bureau (BBB) Auto Line Program (U.S. Only) ....................
240
Utilizing the Mediation/Arbitration Program (Canada Only) .......................
241
Getting Assistance Outside the U.S. and Canada ........................................................
241
Ordering Additional Owner's Literature ........................................................................\
243
Reporting Safety Defects (U.S. Only) ........................................................................\
243
Reporting Safety Defects (Canada Only) ........................................................................\
243
Fuses
Fuse Specification Chart .........................
245
Changing a Fuse .........................................
254
Maintenance
General Information ..................................
256
Opening and Closing the Hood .............
256
Under Hood Overview - 2.3L EcoBoost™ ........................................................................\
258
Under Hood Overview - 5.0L .................
259
Under Hood Overview - 5.0L, Mach 1 .......................................................................
260
Engine Oil Dipstick ......................................
261
Engine Oil Check ..........................................
261
Oil Change Indicator Reset ......................
261
Changing the Engine Air Filter - 5.0L, Mach 1 .........................................................
262
Changing the Engine Air Filter - 2.3L EcoBoost™/5.0L ....................................
263
Engine Coolant Check ..............................
264
Manual Transmission Fluid Check - 6-Speed Manual Transmission – 3160
........................................................................\
268
Manual Transmission Fluid Check - 6-Speed Manual Transmission – MT82
........................................................................\
268 Automatic Transmission Fluid Check
........................................................................\
269
Brake Fluid Check .......................................
269
Clutch Fluid Check - Manual Transmission ............................................
270
Power Steering Fluid Check ....................
270
Changing the 12V Battery ........................
270
Adjusting the Headlamps ........................
272
Washer Fluid Check ...................................
274
Fuel Filter ........................................................
274
Checking the Wiper Blades .....................
274
Changing the Wiper Blades ....................
274
Changing a Bulb ..........................................
275
Track Use
Track Use - Mach 1 ......................................
276
Track Use .......................................................
283
Vehicle Care
General Information ..................................
289
General Information - GT500/Mach 1 ........................................................................\
289
Cleaning Products .....................................
290
Cleaning the Exterior - Mach 1 ................
291
Cleaning the Exterior ..................................
291
Waxing ............................................................
293
Cleaning the Engine - Mach 1 .................
293
Cleaning the Engine ...................................
293
Cleaning the Windows and Wiper Blades ........................................................................\
294
Cleaning the Interior ..................................
294
Cleaning the Instrument Panel and Instrument Cluster Lens ......................
295
Cleaning Leather Seats ............................
295
Repairing Minor Paint Damage .............
296
Cleaning the Wheels .................................
296
Vehicle Storage ...........................................
296
Cleaning the Convertible Top ................
298
Body Styling Kits ........................................
298
5
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Table of Contents

Gauge Mode
Vacuum
Voltage
• Air/Fuel Ratio - Displays the current air to fuel mixture in the engine.
• Axle Oil Temp
- Displays the axle's oil temperature.
• Boost/Vacuum
- Displays the vacuum or boost pressure for the 2.3L engine.
• Cylinder Head Temp
- Displays the engine's cylinder head temperature.
• Inlet Air Temp
- Displays the temperature of the air in the cold air inlet tube.
• Oil Pressure
- Displays the engine oil pressure.
• Oil Temp
- Displays the engine oil temperature. If the temperature rises to the red
area, stop in a safe place and let your vehicle cool. If the problem persists, see an
authorized dealer.
• Trans Oil Temp
- Displays the transmission fluid operating temperature. If the
temperature rises to the red area, stop in a safe place and let the transmission cool.
If the problem persists, see an authorized dealer.
• Vacuum
- Displays the vacuum pressure for the 5.0L engine.
• Voltage
- Displays your vehicle's battery voltage. If the voltage is consistently too
high or very low, contact an authorized dealer.
Note: In order to provide real-time values, some gauges may display more value fluctuation
than other gauges during normal operation.
Trip/Fuel Trip/Fuel
Trip 1 or Trip 2 - Trip timer, Trip distance, distance to E and avg mpg Instant fuel economy
Fuel Economy
AVG MPG
mi to E
Last 30 minutes
Fuel History
105
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Information Displays

GENERAL INFORMATION
Have your vehicle serviced regularly to help
maintain its roadworthiness and resale
value. There is a large network of
authorized dealers that are there to help
you with their professional servicing
expertise. We believe that their specially
trained technicians are best qualified to
service your vehicle properly and expertly.
They are supported by a wide range of
highly specialized tools developed
specifically for servicing your vehicle.
If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which
parts and services are covered.
Use only recommended fuels, lubricants,
fluids and service parts conforming to
specifications. Motorcraft® parts are
designed and built to provide the best
performance in your vehicle.
Precautions
•
Do not work on a hot engine.
• Make sure that nothing gets caught in
moving parts.
• Do not work on a vehicle with the
engine running in an enclosed space,
unless you are sure you have enough
ventilation.
• Keep all open flames and other burning
material, such as cigarettes, away from
the battery and all fuel related parts.
Working with the Engine Off
1. Set the parking brake and shift the transmission to park (P), for automatic
transmission, or neutral (N), for manual
transmission.
2. Switch off the engine.
3. Block the wheels. Working with the Engine On WARNING: To reduce the risk of
vehicle damage and personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running.
1. Set the parking brake and shift the transmission to park (P), for automatic
transmission, or neutral (N), for manual
transmission.
2. Block the wheels.
OPENING AND CLOSING THE
HOOD
Opening the Hood 1.
Inside the vehicle, pull the hood release
handle located under the left-hand
side of the instrument panel.
2. Slightly lift the hood.
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1. Stop your vehicle as soon as it is safe
to do so. Fully apply the parking brake,
shift into park (P) or neutral (N).
2. Leave the engine running until the coolant temperature gauge needle
returns to the normal position. If the
temperature does not drop after
several minutes, follow the remaining
steps.
3. Switch the engine off and wait for it to
cool. Check the coolant level.
4. If the coolant level is at or below the minimum mark, add prediluted coolant
immediately.
5. If the coolant level is normal, restart the engine and continue.
MANUAL TRANSMISSION
FLUID CHECK - 6-SPEED
MANUAL TRANSMISSION –
3160
Note: Make sure the vehicle is on a level
surface.
1. Clean the filler plug. 2. Remove the filler plug.
3.
Start the engine and allow it to idle for
two minutes with the clutch engaged.
4. Add fluid through the filler hole.
5. The correct fluid fill level is 0.0–0.1 in
(0– 3 mm) below the bottom edge of
the filler hole.
6. Install the filler plug.
7. Tighten the filler plug until you feel a strong resistance.
Only use fluid that meets our
specifications. See
Capacities and
Specifications (page 335).
MANUAL TRANSMISSION
FLUID CHECK - 6-SPEED
MANUAL TRANSMISSION –
MT82
1. Clean the filler plug. The filler plug is on the right-hand side of the
transmission. 2. Remove the filler plug.
3. The correct fluid fill level is
0.0–0.1 in
(0– 3 mm) below the bottom edge of
the filler hole.
4. Add fluid through the filler hole.
5. Install the filler plug.
268
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing MaintenanceE215477 E174951

6. Tighten the filler plug until you feel a
strong resistance.
Only use fluid that meets Ford
specifications. See Capacities and
Specifications (page 335).
AUTOMATIC TRANSMISSION
FLUID CHECK
If required, have an authorized dealer check
and change the transmission fluid at the
correct service interval. See
Scheduled
Maintenance (page 441).
The automatic transmission does not have
a transmission fluid dipstick.
Refer to your scheduled maintenance
information for scheduled intervals for fluid
checks and changes. Your transmission
does not consume fluid. However, if the
transmission slips, shifts slowly or if you
notice a sign of leaking fluid, contact an
authorized dealer.
Do not use supplemental transmission
fluid additives, treatments or cleaning
agents. The use of these materials may
affect transmission operation and result
in damage to internal transmission
components.
BRAKE FLUID CHECK WARNING:
Do not use any fluid
other than the recommended brake fluid
as this will reduce brake efficiency. Use
of incorrect fluid could result in the loss
of vehicle control, serious personal injury
or death. WARNING:
Only use brake fluid
from a sealed container. Contamination
with dirt, water, petroleum products or
other materials may result in brake
system damage or failure. Failure to
adhere to this warning could result in the
loss of vehicle control, serious personal
injury or death. WARNING:
Do not allow the fluid
to touch your skin or eyes. If this
happens, rinse the affected areas
immediately with plenty of water and
contact your physician. WARNING:
The brake system
could be affected if the brake fluid level
is below the MIN mark or above the MAX
mark on the brake fluid reservoir. 1. Park your vehicle on a level surface.
2. Look at the brake fluid reservoir to see
where the brake fluid level is relative
to the
MIN and the MAX marks on the
reservoir.
269
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing MaintenanceE170684

Note:
If the brake fluid level is between the
MIN and the MAX marks on the reservoir, it
is acceptable.
Note: If the brake fluid level is below the
MIN
mark or above the MAX mark, have
your vehicle checked as soon as possible.
Note: To avoid fluid contamination, the
reservoir cap must remain in place and fully
tight, unless you are adding fluid.
Only use fluid that meets our
specifications. See
Capacities and
Specifications (page 335).
Brake Fluid Service Interval
Brake fluid absorbs water over time which
degrades the effectiveness of the brake
fluid. Change the brake fluid at the
specified intervals to prevent degraded
braking performance.
For detailed interval information, see
Scheduled Maintenance in your Owner's
Manual or your local maintenance guide.
CLUTCH FLUID CHECK -
MANUAL TRANSMISSION
The clutch and brake systems share the
same fluid reservoir. See
Brake Fluid
Check (page 269).
POWER STEERING FLUID
CHECK
Your vehicle is equipped with an electric
power steering (EPS) system. There is no
fluid reservoir to check or fill. CHANGING THE 12V BATTERY 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:
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. WARNING:
Battery posts,
terminals and related accessories
contain lead and lead compounds,
chemicals known to the State of
California to cause cancer and
reproductive harm. Wash your hands
after handling
.
270
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Maintenance

•
Reduced fuel economy.
• Reduced brake performance. Air Conditioning System WARNING: The air conditioning
refrigerant system contains refrigerant
under high pressure. Only qualified
personnel should service the air
conditioning refrigerant system. Opening
the air conditioning refrigerant system
can cause personal injury.
Capacities Refrigerant Oil
Refrigerant
Variant
3.38 fl oz (100 ml)
19 oz (0.539 kg)
All.
Materials Specification
Name
WSS-M17B21-A
R-1234yf Refrigerant(U.S.)
R-1234yf Refrigerant / Frigorigène R-1234yf(Canada)
YN-33-A(U.S.)
HS7Z-19B519-BA(Canada)
WSS-M2C300-A2
Motorcraft® R-1234yf Refrigerant PAG Oil(U.S.)
Motorcraft® R-1234yf Refrigerant PAG Oil / Huile
PAG pour frigorigène R-1234yf Motorcraft®(Canada)
YN-35(U.S. & Canada)
Automatic Transmission
Note: Automatic transmissions that require
MERCON® ULV transmission fluid should
only use MERCON® ULV transmission fluid.
The use of any other fluid could cause
transmission damage.
Capacities Quantity
Variant
12.7 qt (12 L)1
All.
1 Approximate dry fill capacity. Actual amount could vary during fluid changes.
344
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Capacities and Specifications

Materials
Specification
Name
WSS-M2C949-A, MERCON® ULV
Motorcraft® MERCON® ULV Automatic Transmis-
sion Fluid(U.S.)
Motorcraft® MERCON® ULV Automatic Transmis-
sion Fluid / MERCON® ULV huile pour boîtes auto-
matique Motorcraft®(Canada)
XT-12-QULV(U.S. & Canada)
Manual Transmission
Capacities Quantity
Variant
2.7 qt (2.6 L)
All.
Materials Specification
Name
WSS-M2C200-D2
Motorcraft® Dual Clutch Transmission Fluid(U.S.)
Motorcraft® Dual Clutch Transmission Fluid / Huile
pour boîtes embrayage double Motor-
craft®(Canada)
XT-11-QDC(U.S. & Canada)
Engine Coolant
Capacities Quantity
Variant
9.5 qt (8.96 L)
All.
345
Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-09-2020, enUSA, Edition date: 202010, Second-Printing Capacities and Specifications