FORD SUPER DUTY 2003 1.G Diesel Supplement Manual

5. After the engine starts, allow it to idle for about 15 seconds. (Do not
increase engine speed until the oil pressure gauge indicates normal
pressure.)
STOPPING THE ENGINE
Turn the ignition to OFF. To prolong engine life (after extended high
speed or maximum GVW operation), it is recommended that a hot engine
be allowed to operate at low idle for about 7–10 minutes which would
allow sufficient time for the turbocharged engine to cool down.
COLD WEATHER OPERATION
Changing to a lighter grade engine oil also makes starting easier under
these conditions. Refer toEngine oil specificationsin theGeneral
maintenance informationchapter.
At temperatures below–7°C (20°F), Number 2–D Diesel fuel may
thicken enough to clog the fuel filter. Your vehicle is equipped with an
HFCM which acts as a fuel filter/heater/water separator to keep the wax
melted which will help prevent fuel filter clogging. However, if the engine
starts but stalls after a short time and will not restart, the fuel filter(s)
may be clogged. For best results in cold weather, use Number 1–D Diesel
fuel or“winterized”Number 2–D Diesel fuel which has an additive to
minimize wax formation.
Your vehicle is also equipped with a bypass relief valve, located on the
fuel control module, which provides fuel flow to the engine if the fuel
pickup should become plugged by ice or wax. To allow this bypass valve
to function and avoid engine fuel starvation, it is recommended that,
during cold weather operation 0°C (32°F) or below, the fuel level in your
tank should not be allowed to drop below 1/4 full. This will help prevent
air from entering the fuel system and stalling the engine.
In cold weather below 0°C (32°F) your Diesel engine will slowly increase
to a higher idle speed if left idling in P (Park). As the engine warms-up,
the engine sound level will decrease due to the activation of
PCM-controlled sound reduction features.
Operation in snow
Vehicle operation in heavy snowfall or in dry loose snow that may swirl
around the front of the vehicle may feed excessive amounts of snow into
the air intake system. This could plug the air cleaner with snow and
cause the engine to stall.
Refer toAir filter restriction gaugein theDiesel informationchapter
and Engine air filter in theWarning lightschapter for more information.
Starting
11

Operation in standing water
Ingestion of water into the Diesel engine can result in immediate and
severe damage to the engine. If driving through water, slow down to
avoid splashing water into the intake. If the engine stalls, and ingestion
of water into the engine is suspected, do not try to restart the engine.
Consult your dealer for service immediately.
Engine block heater (if equipped)
Refer to theStartingchapter in your Owner Guide.
Starting
12

DUAL FUEL TANK SELECTOR CONTROL (IF EQUIPPED)
If your vehicle is equipped with dual fuel tanks, you will have a selector
control, located to the right of the steering wheel, which allows you to
draw fuel from either tank. Your fuel gauge will display the amount of
fuel in the currently selected tank.
Fuel level indication is delayed for several minutes when the tank
selector switch is actuated. Fuel level indication can be obtained
immediately by turning off and restarting the engine.
MANUAL TRANSMISSION SHIFT SPEEDS
Do not overspeed the engine when going downhill or steep grades. If
equipped, use the tachometer and do not allow engine speed to exceed
the redline area. Operating the engine beyond the recommended speeds
can cause severe engine damage.
Your vehicle has an electronic operating strategy which protects
the engine system when the engine is operating with high coolant
temperatures; fueling to the engine will be modified to prevent
damage to the engine. Some power loss may be experienced if the
vehicle is overloaded.
Upshift and downshift according to the following shift speed charts:
Upshifts when accelerating (recommended for best fuel
economy)
6-speed transmission
Shift from: Transfer case position
1(if equipped)
2H or 4H 4L
LO-1 8 km/h (5 mph) 3 km/h (2 mph)
1-2 16 km/h (10 mph) 6 km/h (4 mph)
2-3 32 km/h (20 mph) 13 km/h (8 mph)
3-4 48 km/h (30 mph) 19 km/h (12 mph)
4
-
D(Overdrive)64 km/h (40 mph) 24 km/h (15 mph)
Driving tips
13

Maximum downshift speeds1
6-speed transmission
Shift from: Transfer case position (if equipped)2
2H or 4H 4L
D(Overdrive) -
472 km/h (45 mph) 26 km/h (16 mph)
4-3 56 km/h (35 mph) 19 km/h (12 mph)
3-2 32 km/h (20 mph) 13 km/h (8 mph)
2-1 8 km/h (5 mph) 3 km/h (2 mph)
1-LO Only shift to LO when at a stop.
1Use 2H or 4H for 4WD equipped vehicles.2Downshift at lower speeds when driving on slippery surfaces.
TRAILER TOWING
Refer to your Owner Guide for full details on towing a trailer.
Trailer towing tables
Excursion
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2
6.0L 3.73 9072 (20000) 4988 (11000)
4x4
6.0L 3.73 9072 (20000) 4990 (11000)
F-250
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
6.0L All 9072 (20000) 5670 (12500)
Regular Cab Pickup 4x2 with manual transmission and fifth wheel
6.0L All 9072 (20000) 6167 (13600)
Driving tips
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F-250
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Regular Cab Pickup 4x2 with automatic transmission and fifth
wheel
6.0L All 9072 (20000) 6213 (13700)
Regular Cab Pickup 4x4 with manual transmission and fifth wheel
6.0L All 9072 (20000) 6033 (13300)
Regular Cab Pickup 4x4 with automatic transmission and fifth
wheel
6.0L All 9072 (20000) 6033 (13300)
SuperCab Pickup 4x2 with fifth wheel
6.0L All 9072 (20000) 6033 (13300)
SuperCab Pickup 4x4 with manual transmission and fifth wheel
6.0L All 9072 (20000) 5396 (11900)
SuperCab Pickup 4x4 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 5578 (12300)
Crew Cab Pickup 4x2 with manual transmission and fifth wheel
6.0L All 9072 (20000) 5850 (12900)
Crew Cab Pickup 4x2 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 5941 (13100)
Crew Cab Pickup 4x4 with manual transmission and fifth wheel
6.0L All 9072 (20000) 4671 (10300)
Crew Cab Pickup 4x4 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 4807 (10600)
Driving tips
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F-350 Regular Cab Single Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
6.0L All 9072 (20000) 5670 (12500)
4x2 with manual transmission and fifth wheel
6.0L All 9072 (20000) 6167 (13600)
4x2 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 6213 (13700)
4x4 with fifth wheel
6.0L All 9072 (20000) 6033 (13300)
F-350 Regular Cab Dual Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
6.0L All 9072 (20000) 6031 (13300)
4x2 with manual transmission and fifth wheel
6.0L All 9072 (20000) 6031 (13300)
4x2 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 6078 (13400)
4x4 with manual transmission and fifth wheel
6.0L All 9072 (20000) 5851 (12900)
4x4 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 5897 (13000)
Driving tips
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F-350 SuperCab Single Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
6.0L All 9072 (20000) 5670 (12500)
4x2 with fifth wheel
6.0L All 9072 (20000) 6031 (13300)
4x4 with manual transmission and fifth wheel
6.0L All 9072 (20000) 5850 (12900)
4x4 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 5897 (13000)
F-350 SuperCab Dual Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
6.0L All 9072 (20000) 5895 (13000)
4x2 with fifth wheel
6.0L All 9072 (20000) 5895 (13000)
4x4 with fifth wheel
6.0L All 9072 (20000) 5714 (12600)
F-350 Crew Cab Single Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
6.0L All 9072 (20000) 5670 (12500)
4x2 with manual transmission and fifth wheel
6.0L All 9072 (20000) 5850 (12900)
4x2 with automatic transmission and fifth wheel
6.0L All 9072 (20000) 5941 (13100)
Driving tips
17

F-350 Crew Cab Single Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x4 with fifth wheel
6.0L All 9072 (20000) 5759 (12700)
F-350 Crew Cab Dual Rear Wheel Pickup
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2
6.0L All 9072 (20000) 5804 (12800)
4x4
6.0L All 9072 (20000) 5625 (12400)
F-350 Regular Chassis Cab Single Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2
6.0L All 9072 (20000) 5942 (13100)
4x4
6.0L All 9072 (20000) 5761 (12700)
F-350 Regular Chassis Cab Dual Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2
6.0L All 9072 (20000) 5759 (12700)
4x4
6.0L All 9072 (20000) 5532 (12200)
Driving tips
18

F-350 SuperCab Chassis Cab Single Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2 with manual transmission
6.0L All 9072 (20000) 5759 (12700)
4x2 with automatic transmission
6.0L All 9072 (20000) 5804 (12800)
4x4
6.0L All 9072 (20000) 5579 (12300)
F-350 SuperCab Chassis Cab Dual Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2 with manual transmission
6.0L All 9072 (20000) 5623 (12400)
4x2 with automatic transmission
6.0L All 9072 (20000) 5668 (12500)
4x4 with manual transmission
6.0L All 9072 (20000) 5442 (12000)
4x4 with automatic transmission
6.0L All 9072 (20000) 5487 (12100)
F-350 Crew Cab Chassis Cab Single Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2 with manual transmission
6.0L All 9072 (20000) 5668 (12500)
4x2 with automatic transmission
6.0L All 9072 (20000) 5715 (12600)
Driving tips
19

F-350 Crew Cab Chassis Cab Single Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x4 with manual transmission
6.0L All 9072 (20000) 5488 (12100)
4x4 with automatic transmission
6.0L All 9072 (20000) 5534 (12200)
F-350 Crew Cab Chassis Cab Dual Rear Wheel (Fifth Wheel
Towing)
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2 with manual transmission
6.0L All 9072 (20000) 5534 (12200)
4x2 with automatic transmission
6.0L All 9072 (20000) 5579 (12300)
4x4 with manual transmission
6.0L All 9072 (20000) 5306 (11700)
4x4 with automatic transmission
6.0L All 9072 (20000) 5352 (11800)
F-450
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Regular Chassis Cab 4x2 with manual transmission
6.0L All 11793 (26000) 8163 (18000)
Regular Chassis Cab 4x2 with automatic transmission
6.0L All 11793 (26000) 8210 (18100)
Regular Chassis Cab 4x4 with manual transmission
6.0L All 11793 (26000) 8027 (17700)
Driving tips
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