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Starting a diesel engine with the vehicle on a steep grade
When starting a diesel engine when the loaded vehicle is on a grade, the
engine RPM starts to fall slightly when the clutch is engaged; do not
disengage the clutch and try to increase engine RPM as this may damage
driveline components. The engine recovers as the vehicle begins moving.
Cold weather operation
WARNING:Do not use volatile starting aids such as ether,
propane or gasoline in the engine air intake system. Glow plugs
may ignite vapors which can cause engine damage or personal injury.
For best engine operation in temperatures of 32°F (0°C) or lower:
•Make sure the batteries are the correct type and are fully charged.
Check other electrical components to make sure they’re in optimum
condition.
•Use a permanent-type engine coolant to protect the engine against
damage from freezing.
•If your vehicle is equipped with a water-fuel separator, drain it daily.
Fill the fuel tank at the end of daily operation to prevent condensation
in the fuel system.
•Use the proper engine oil and maintain it at its proper level.
•
At temperatures of –4°F (–20°C) or below, it is recommended that you
use a crankcase-mounted coolant heater to improve cold engine starting.
•If operating in arctic temperatures of –20°F (–29°C) or lower, consult
your truck dealer for information about special cold weather
equipment and precautions.
Note:Idling in cold weather does not heat the engine to its normal
operating temperature. Long periods of idling in cold weather can cause
a build-up of heavy deposits of carbon and rust on valve stems causing
them to stick which, in turn, can cause valvetrain damage.
The use of winter fronts, or other air-restrictive devices mounted in front
of the radiator on vehicles with chassis-mounted charge air coolers, are
not recommended unless extremely cold weather conditions exist. Air
flow restriction can cause high exhaust temperatures, power loss,
excessive fan usage and a reduction in fuel economy. If you must use a
winter front, the device should have a permanent opening of at least 120
sq in. (774 sq. cm) directly in line with the fan hub.
Driving
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Component Lubrication typeViscosity / Ambient
temperature / NotesEquivalent Ford part
name / number
Gasoline engine:•MotorcraftSAE
5W-20 Premium
Synthetic Blend Motor
Oil (US)
•MotorcraftSAE
5W-20 Full Synthetic
Motor Oil (US)
•MotorcraftSAE
5W-20 Super Premium
Motor Oil (Canada)
•MotorcraftSAE
5W-20 Synthetic Motor
Oil (Canada) /
WSS-M2C945-A and
API Certification Mark—•XO-5W20-QSP (US)
•XO-5W20-QFS (US)
•CXO-5W20–LSP12
(Canada)
•CXO-5W-20-LFS12
(Canada)
Brake fluid
Master cylinder DOT 3, WSS-M6C62-A
or WSS-M6C65-A1— High Performance DOT
3 Motor Vehicle Brake
Fluid, PM-1-C (U.S.) or
CPM-1-C (Canada)
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Axle model Pints (Liters)*
RS-19–220 30.0 (14.0)
RS-19–223 29.0 (13.0)
RS-21–145 32.3 (15.3)
RS-21–160 39.0 (18.0)
RS-21–230 38.9 (18.4)
RS-23–160 39.5 (18.7)
RS-23–161 37.2 (17.6)
RS-23–180 47.3 (22.4)
RS-23–186 47.3 (22.4)
RS-23–240 37.4 (17.7)
RS-23–380 63.6 (30.1)
*Oil capacities are for standard track axles that have been measured at
various common drive pinion angles. The quantities listed include enough
oil for both wheel ends. These capacities change if the track or the drive
pinion angle is different.
Engine coolant and oil
Engine Engine coolant1,2Engine oil1
Diesel 26.0 quarts (24.6L) Refer to engine operator’s manual
Gas26.3 quarts (24.9L) 7.0 quarts (6.6L) (includes filter
change)
1Quantities listed are approximate.
2Add the coolant type originally equipped in your vehicle.
Power steering system
Steering gear Power steering fluid volume
TAS40 17.6 pints
TAS66 18.4 pints
Note:Capacities may be increased if the vehicle is equipped with a
cooler. Always check to make sure the fluid level is in the acceptable
range.
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Transmission
Description Pints (Liters)
Allison 2000 Series 30.0 (14.2)*
Allison 3000 Series 37.6 (17.8)*
TorqShift6–speed 31.0 (14.9L)
5–speed manual 12.5 (5.9)
6–speed manual 19.5 (9.2)
7–speed manual 22.0 (10.4)
*Total fluid capacity (dry transmission and torque converter).
Note:Capacities may be increased if the vehicle is equipped with a
cooler. Always check to make sure the fluid level is in the acceptable
range.
Air conditioner refrigerant - r134a
This system uses PAG-type refrigerant oil.
Refrigerant fitting torque
Captured washer nut: 170–190 inch lb. (19–21 N•m)
Note:This system uses mineral-based refrigerant oil to lubricate o-rings
and fittings.
Fuel tanks
Standard tanks are listed as such; all other tanks available for your
vehicle are optional equipment.
Vehicles with gasoline engine Tank type Gallons
(Liters)
F-650 Low Profile, F-650 Dock
HeightSingle, steel
rectangular42 (159)
60 (227)
Vehicles with diesel engine Tank type Gallons
(Liters)
F-650 Low Profile (standard), F-650
Dock HeightSingle, steel
rectangular35 (132)
F-650 Low Profile, F-650 Dock
Height (standard), F-750 Pick-up
and Delivery (standard), F-750
Severe Service (standard)Single, steel
rectangular45 (170)
Maintenance and Specifications
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SEVERE SERVICE - ON/OFF ROAD IN DIRTY CONDITIONS OR 20,000 MILES (32,000 KM) OR FEWER
ANNUALLY (Continued)
(Miles, kilometers or months - whichever occurs first)
Miles (x 1,000) 5 10 15 20 25 30 35 40 45 50
Kilometers (x 1,000) 8 16 24 32 40 48 56 64 72 80
Months 3 6 9 12 15 18 21 24 27 30
Cab components
Door hinges/latches/strikers - lubricate, check link••
Door lock cylinders - lubricate••
Seat adjuster slides - lubricate••
Diesel exhaust fluid (DEF) system
Check and refill DEF system••••••••••
Note:If your vehicle is equipped with a gasoline engine, the engine oil and filter changes should
observe the normal schedule unless conditions such as low-speed operation or stationary use exist
where a schedule based on engine hours is recommended. In this type of schedule, the engine oil
and filter should be replaced every 250 engine hours.
Scheduled Maintenance Guide
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SEVERE SERVICE - ON/OFF ROAD IN DIRTY CONDITIONS OR 20,000 MILES (32,000 KM) OR FEWER
ANNUALLY (Continued)
(Miles, kilometers or months - whichever occurs first)
Miles (x 1,000) 55 60 65 70 75 80 85 90 95 100
Kilometers (x 1,000) 88 96 104 112 120 128 136 144 152 160
Months 33 36 39 42 45 48 51 54 57 60
Meritor - filter change Every 100,000 miles (160,000 km)
Meritor - petroleum oil - change Every 25,000 miles (40,000 km) or annually, whichever comes
first
Meritor - synthetic oil - change Every 100,000 miles (160,000 km) or annually, whichever comes
first
Cab components
Door hinges/latches/strikers - lubricate, check link•••
Door lock cylinders - lubricate•••
Seat adjuster slides - lubricate•••
Diesel exhaust fluid (DEF) system
Check and refill DEF system••••••••••
Note:If your vehicle is equipped with a gasoline engine, the engine oil and filter changes should
observe the normal schedule unless conditions such as low-speed operation or stationary use exist
where a schedule based on engine hours is recommended. In this type of schedule, the engine oil
and filter should be replaced every 250 engine hours.
Scheduled Maintenance Guide
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