FORD SUPER DUTY 2021 Owners Manual

FUEL TANK CAPACITY - GASOLINE
Capacities
Quantity
Variant
34.0 gal (128.7 L)
Complete vehicle-all except 176 inch
wheelbase and incomplete vehicles.
48.0 gal (181.7 L)
Complete vehicle-176 inch wheelbase.
40.0 gal (151.4 L)
Incomplete vehicle, aft- axle -location.
26.5 gal (100.3 L)
Incomplete vehicle, middle location.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

AIR CONDITIONING SYSTEM
CAPACITY AND
SPECIFICATION - 6.2L
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.
Use refrigerant and oil that meets the
defined specifications.
If you do not use refrigerant and oil that
meets the defined specifications, it could
result in:
• Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Refrigerant Oil
Refrigerant
Variant
4.1 fl oz (120 ml)
27 oz (0.765 kg)
With six-speed automatic
transmission.
3.7 fl oz (110 ml)
27 oz (0.765 kg)
With ten-speed automatic
transmission.
Materials Specification
Name
WSH-M17B19-A
Motorcraft® R-134a Refrigerant(U.S.)
R-134a Refrigerant / Frigorigène R-134a(Canada)
YN-19(U.S.)
CYN-19-R(Canada)
WSH-M1C231-B
Motorcraft® PAG Refrigerant Compressor Oil(U.S.)
Motorcraft® PAG Refrigerant Compressor Oil / Huile
PAG pour compresseur frigorifique Motor-
craft®(Canada)
YN-12-D(U.S. & Canada)
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

AIR CONDITIONING SYSTEM
CAPACITY AND
SPECIFICATION - 6.7L DIESEL
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.
Use refrigerant and oil that meets the
defined specifications.
If you do not use refrigerant and oil that
meets the defined specifications, it could
result in:
• Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Refrigerant Oil
Refrigerant
Variant
3.7 fl oz (110 ml)
27 oz (0.765 kg)
All.
Materials Specification
Name
WSH-M17B19-A
Motorcraft® R-134a Refrigerant(U.S.)
R-134a Refrigerant / Frigorigène R-134a(Canada)
YN-19(U.S.)
CYN-19-R(Canada)
WSH-M1C231-B
Motorcraft® PAG Refrigerant Compressor Oil(U.S.)
Motorcraft® PAG Refrigerant Compressor Oil / Huile
PAG pour compresseur frigorifique Motor-
craft®(Canada)
YN-12-D(U.S. & Canada)
460
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

AIR CONDITIONING SYSTEM
CAPACITY AND
SPECIFICATION - 7.3L
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.
Use refrigerant and oil that meets the
defined specifications.
If you do not use refrigerant and oil that
meets the defined specifications, it could
result in:
• Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Refrigerant Oil
Refrigerant
Variant
3.7 fl oz (110 ml)
27 oz (0.765 kg)
All.
Materials Specification
Name
WSH-M17B19-A
Motorcraft® R-134a Refrigerant(U.S.)
R-134a Refrigerant / Frigorigène R-134a(Canada)
YN-19(U.S.)
CYN-19-R(Canada)
WSH-M1C231-B
Motorcraft® PAG Refrigerant Compressor Oil(U.S.)
Motorcraft® PAG Refrigerant Compressor Oil / Huile
PAG pour compresseur frigorifique Motor-
craft®(Canada)
YN-12-D(U.S. & Canada)
WASHER FLUID SPECIFICATION
Capacities Quantity
Variant
Fill as required.
All.
461
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

Materials
Specification
Name
WSS-M14P19-A
Motorcraft® Premium Windshield Wash Concen-
trate with Bitterant(U.S.)
Motorcraft® Premium Quality Windshield Washer
Fluid / Liquide lave-glace de haute qualité Motor-
craft®(Canada)
ZC-32-B2(U.S.)
CXC-37-A/B/D/F(Canada)
DIESEL EXHAUST FLUID
CAPACITY AND
SPECIFICATION (IF EQUIPPED)
Use fluid that meets the defined
specification. If you do not use fluid that meets the
defined specification, it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Quantity
Variant
7.4 gal (28 L)
Complete vehicle.
7.2 gal (27.3 L)
Incomplete vehicle.
Materials Specification
Name
WSS-M99C130-A
Motorcraft® Diesel Exhaust Fluid(U.S.)
Motorcraft® Diesel Exhaust Fluid / Fluide pour
échappement diesel Motorcraft®(Canada)
PM-27-GAL,PM-27-JUG(U.S.)
CPM-27-J(Canada)
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

AUTOMATIC TRANSMISSION
FLUID CAPACITY AND
SPECIFICATION - DIESEL
Use fluid that meets the defined
specification.
If you do not use fluid that meets the
defined specification, it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Note: Only use MERCON ULV transmission
fluid for automatic transmissions that
require MERCON ULV transmission fluid.
The use of any other fluid could cause
transmission damage.
Capacities Quantity
Variant
18.1 qt (17.1 L)1
All.
1 Approximate dry fill capacity. Actual amount could vary during fluid changes.
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)
AUTOMATIC TRANSMISSION
FLUID CAPACITY AND
SPECIFICATION - GASOLINE
Use fluid that meets the defined
specification. If you do not use fluid that meets the
defined specification, it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Six-Speed Automatic
Transmission
Note: Only use MERCON LV transmission
fluid for automatic transmissions that
require MERCON LV transmission fluid. The
use of any other fluid could cause
transmission damage.
463
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

Capacities
Quantity
Variant
13.9 qt (13.2 L)1
6.2L.
1 Approximate dry fill capacity. Actual amount could vary during fluid changes.
Materials Specification
Name
WSS-M2C938-AMERCON® LV,
Motorcraft® MERCON® LV Automatic Transmission
Fluid(U.S.)
Motorcraft® MERCON® LV Automatic Transmission
Fluid / Huile pour boîte automatique MERCON® LV
Motorcraft®(Canada)
XT-10-QLVC(U.S.)
CXT-10-LV6(Canada)
Ten-Speed Automatic
Transmission
Note: Only use MERCON ULV transmission
fluid for automatic transmissions that
require MERCON ULV transmission fluid.
The use of any other fluid could cause
transmission damage.
Capacities Quantity
Variant
18.2 qt (17.2 L)1
6.2L.
18.2 qt (17.2 L)1
7.3L .
1 Approximate dry fill capacity. Actual amount could vary during fluid changes.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, 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)
BRAKE FLUID SPECIFICATION
Use fluid that meets the defined
specification and viscosity grade.
If you do not use fluid that meets the
defined specification and viscosity grade,
it could result in:
• Component damage that your vehicle
warranty does not cover.
• Reduced brake performance. Note:
We recommend you use DOT 4 Low
Viscosity (LV) High Performance Brake Fluid
or equivalent meeting WSS-M6C65-A2. If
you use any fluid other than the
recommended fluid, it could cause reduced
brake performance and not meet our
performance standards. Keep brake fluid
clean and dry. Contamination with dirt,
water, petroleum products or other
materials could result in brake system
damage and possible failure.
Capacities Quantity
Variant
Fill as required.
All.
Materials Specification
Name
WSS-M6C65-A2
Motorcraft® DOT 4 LV High Performance Motor
Vehicle Brake Fluid(U.S.)
Motorcraft® DOT 4 LV High Performance Motor
Vehicle Brake Fluid / Liquide de frein automobile
haute performance DOT 4 LV Motorcraft®(Canada)
PM-20(U.S. & Canada)
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

TRANSFER CASE FLUID
CAPACITY AND
SPECIFICATION (IF EQUIPPED)
Use fluid that meets the defined specification.
If you do not use fluid that meets the
defined specification, it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Quantity
Variant
1.9 qt (1.8 L)
All.
Materials Specification
Name
WSS-M2C938-AMERCON® LV,
Motorcraft® MERCON® LV Automatic Transmission
Fluid(U.S.)
Motorcraft® MERCON® LV Automatic Transmission
Fluid / Huile pour boîte automatique MERCON® LV
Motorcraft®(Canada)
XT-10-QLVC(U.S.)
CXT-10-LV6(Canada)
FRONT AXLE FLUID CAPACITY
AND SPECIFICATION
Use fluid that meets the defined
specification and viscosity grade. If you do not use fluid that meets the
defined specification and viscosity grade,
it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Quantity
Variant
2.75 qt (2.6 L)
Four-wheel drive without limited slip.
2.75 qt (2.6 L)1
Four-wheel drive with limited slip.
1 For complete refill of limited slip axles, add 5.4 fl oz. (160 ml) of Additive Friction Modifier
XL-3 or equivalent, meeting specification EST-M2C118-A. Include this friction modifier in
the total lube volume of 2.75 qt (2.6 L).
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications

Materials
Specification
Name
EST-M2C118-A
Motorcraft® Additive Friction Modifier(U.S.)
Motorcraft® Additive Friction Modifier / Additif
modificateur de friction Motorcraft®(Canada)
XL-3(U.S.)
CXL-3(Canada)
WSP-M2C197-A
Motorcraft® SAE 80W-90 Premium Rear Axle
Lubricant(U.S.)
Motorcraft® SAE 80W-90 Premium Axle Lubricant
/ Lubrifiant pour essieux de très haute qualité SAE
80W-90 Motorcraft®(Canada)
XY-80W90-QL(U.S.)
CXY-80W90-1L(Canada)
REAR AXLE FLUID CAPACITY
AND SPECIFICATION - DIESEL
Use fluid that meets the defined
specification and viscosity grade. If you do not use fluid that meets the
defined specification and viscosity grade,
it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Rear Axle - 10.5
Capacities Quantity
Variant
3.3–3.5 qt (3.1– 3.3 L)
With Electronic Locking Differential.
3.5–3.6 qt (3.3– 3.4 L)
Without Electronic Locking Differential.
Materials Specification
Name
WSS-M2C942-A
Motorcraft® SAE 75W-85 Premium Synthetic
Hypoid Gear Lubricant(U.S.)
Motorcraft® SAE 75W-85 Premium Synthetic
Hypoid Gear Lubricant / Huile synthétique de haute
qualité pour engrenages hypoïdes SAE 75W-85
Motorcraft®(Canada)
XY-75W85-QL(U.S. & Canada)
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Capacities and Specifications