Ford F-650/750 (2018 year). Manual — part 66

•

Reduced engine performance.

•

Reduced fuel economy.

•

Degraded brake performance.

Note: An engine block heater is
recommended at temperatures below
–10°F (–23°C).

Engine Oil Specifications

The use of correct oil viscosities for diesel
engines is important for satisfactory
operation. Determine which oil viscosity
best suits the temperature range you
expect to encounter for the next service
interval from the following SAE viscosity
grade chart.

E163370

•

(1) For severe duty service, use SAE
5W-40, WSS-M2C171-F1.

•

(2) For biodiesel fuel blends (B20
max), use SAE 5W-40 or SAE 15W-40,
WSS-M2C171-F1.

CAPACITIES AND SPECIFICATIONS - 6.8L

Capacities

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.

Capacity

Item

7.0 qt (6.6 L)

Engine oil (with oil filter)

28.8 qt (27.3 L)

1

Engine coolant

58 gal (219.5 L)

Fuel tank (Limited Series)

(Usable capacity)

2

62 gal (234.6 L)

(Liquid capacity)

47 gal (177.9 L)

Fuel tank (Small)

(Usable capacity)

2

50 gal (189.2 L)

(Liquid capacity)

59 gal (223.3 L)

Fuel tank (Large)

(Usable capacity)

2

63 gal (238.4 L)

(Liquid capacity)

Between MIN and MAX on brake fluid

reservoir

Brake fluid

17.4 qt (16.5 L)

3

Automatic transmission fluid

6–7 fl oz (177–207 ml)

Front axle wheel bearing oil (8500 lb axle)

12–13 fl oz (355–385 ml)

Front axle wheel bearing oil (all except
8500 lb axle)

Capacity

Item

19 pt (9.0 L)

4

Rear axle (S-140)(13.5k, 17.5k, 19k single
speed)

37 pt (17.5 L)

4

Rear axle (S-170)(23k single speed)

37 pt (17.5 L)

4

Rear axle (S-190)(26k single speed)

28 pt (13.2 L)

4

Rear axle (21060S)(21k single speed)

5.2 qt (4.9 L)

4

Power Steering (air brake equipped)

6.1 qt (5.8 L)

4

Power Steering (hydraulic brake equipped)

Fill as required

Windshield washer fluid

29.1 oz (0.825 kg)

A/C refrigerant

7.1 fl oz (210 ml)

5

A/C refrigerant compressor oil

1

Use the coolant type originally equipped in your vehicle. Using any other coolant may

result in vehicle damage.

2

Do NOT fill above the 95% liquid capacity.

3

Approximate dry fill capacity. Actual amount may vary during fluid changes.

4

Capacities may be higher if the vehicle is equipped with a cooler. Always check to make

sure the fluid level is in the acceptable range.

5

This system uses mineral-based refrigerant oil to lubricate O-rings and fittings.

Specifications

Materials

Specification

Name

WSS-M2C945-A

Recommended motor oil (U.S. and Mexico):
Motorcraft® SAE 5W-20 Premium Synthetic Blend Motor
Oil
XO-5W20-QSP

WSS-M2C945-A

Recommended motor oil (Canada):
Motorcraft® SAE 5W-20 Super Premium Motor Oil
CXO-5W20-LSP12

WSS-M2C946-A

Optional motor oil (U.S. and Mexico):

Specification

Name

Motorcraft® SAE 5W-30 Premium Synthetic Blend Motor
Oil
XO-5W30-QSP

WSS-M2C946-A

Optional Motor oil (Canada):
Motorcraft® SAE 5W-30 Super Premium Motor Oil
CXO-5W30-LSP12

WSS-M97B44-D2

Engine coolant (U.S. and Mexico):
Motorcraft® Orange Prediluted Antifreeze/Coolant
VC-3DIL-B

WSS-M97B44-D2

Engine coolant (Canada):
Motorcraft® Orange Prediluted Antifreeze/Coolant
CVC-3DIL-B

WSS-M6C65-A3

Brake fluid:
Motorcraft® DOT 5.1 Motor Vehicle Brake Fluid
PM-21

WSS-M2C938-A

Automatic transmission fluid (U.S. and Mexico):

MERCON LV

Motorcraft® MERCON LV Automatic Transmission Fluid
XT-10-QLVC

WSS-M2C938-A

Automatic transmission fluid (Canada):

MERCON LV

Motorcraft® MERCON LV Automatic Transmission Fluid
CXT-10-QLVC

WSL-M2C192-A

Front axle (wheel bearing oil):
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant
XY-75W140-QL

WSP-M2C197-A

1

Recommended Rear axle fluid (U.S. and Mexico): (S-
140)
Motorcraft® SAE 80W-90 Premium Rear Axle Lubricant
XY-80W90-QL

WSP-M2C197-A

1

Recommended Rear axle fluid (Canada): (S-140)
Motorcraft® SAE 80W-90 Premium Rear Axle Lubricant
CXY-80W90-1L

WSL-M2C192-A

1

Optional Rear axle fluid (U.S. and Mexico): (S-140)
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant
XY-75W140-QL

WSL-M2C192-A

1

Optional Rear axle fluid (Canada): (S-140)
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant
CXY-75W140-1L