Habits
•Smooth, moderate operation can yield up to 10% savings in fuel.
•Steady speeds without stopping will usually give the best fuel
economy.
•Idling for long periods of time (greater than one minute) may waste
fuel.
•Anticipate stopping; slowing down may eliminate the need to stop.
•Sudden or hard accelerations may reduce fuel economy.
•Slow down gradually.
•Driving at reasonable speeds (traveling at 88 km/h [55 mph] uses 15%
less fuel than traveling at 105 km/h [65 mph]).
•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between third and fourth gear occurs.
Unnecessary shifting of this type could result in reduced fuel
economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toLubricant specificationsin
this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
0.4 km/L [1 mpg] is lost for every 180 kg [400 lb] of weight carried).
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
252
1Your vehicle’s rear axle(s) may be filled with a synthetic lubricant that
may require a lubricant change. Refer to the scheduled maintenance
guide. Axle lubricant quantities should not need to be checked unless a
leak is suspected, service is required or the axle assembly has been
submerged in water. The axle lubricant should be changed any time the
rear axle has been submerged in water.
2Add 236 ml (8 oz.) of Additive Friction Modifier XL-3or equivalent
meeting Ford Specification EST-M2C118-A for complete refill of
Traction-Lok axles.
3Add the coolant type originally equipped in your vehicle.
4Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the end of the dipstick. Check the
container to verify the fluid being added is of the correct type. Refer to
your scheduled maintenance guide to determine the correct service
interval.
Some transmission fluids may be labeled as dual usage, such as
MERCONand MERCONV. These dual usage fluids are not to be used
in an automatic transmission that requires use of the MERCONtype
fluid. However, these dual usage fluids may be used in transmissions that
require the MERCONV type fluid.
MERCON, MERCONV and MERCONSP are not
interchangeable. DO NOT mix MERCON, MERCONV and
MERCONSP. Use of dual usage fluids in an automatic
transmission application requiring MERCONSP may cause
transmission damage. Use of a transmission fluid other than the
recommended fluid may cause transmission damage.
5Service refill capacity is determined by filling the transmission to the
bottom of the filler hole with the vehicle on a level surface. The 6–speed
manual transmission is equipped with an in-tank cooler. Verify the fluid
level after operating vehicle to assure correct fluid level.
6Indicates only approximate dry-fill capacity. Some applications may vary
based on cooler size and if equipped with an in-tank cooler. The amount
of transmission fluid and fluid level should be set by the indication on
the dipstick’s normal operating range.
7Use of synthetic or synthetic blend motor oil is not mandatory. Engine
oil need only meet the requirements of Ford specification
WSS-M2C153–H and the API Certification mark.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
280
waxing .....................................225
wheels ......................................226
wiper blades ............................227
Clock ............................................33
Clock adjust
AM/FM .................................21, 23
AM/FM Stereo ...........................23
AM/FM/CD ...........................26, 33
AM/FM/Tape/CD .......................30
Clutch
fluid ..........................................257
operation while driving ..........138
recommended shift speeds ....139
Compass, electronic ....................69
calibration .................................71
set zone adjustment .................70
Console ........................................67
overhead ....................................52
Coolant
checking and adding ..............240
refill capacities ................243, 278
specifications ..................281, 284
Cruise control
(see Speed control) ....................59
Customer Assistance ................191
Ford accessories for your
vehicle .....................................230
Ford Extended Service
Plan ..........................................218
Getting assistance outside the
U.S. and Canada .....................222
Getting roadside assistance ...191
Getting the service you
need .........................................216
Ordering additional owner’s
literature .................................223
The Dispute Settlement
Board .......................................218Utilizing the
Mediation/Arbitration
Program ...................................221
D
Daytime running lamps
(see Lamps) ................................41
Dipstick
automatic transmission
fluid ..........................................258
engine oil .................................235
Doors
lubricant specifications ..........281
Driveline universal joint and
slip yoke ....................................262
Driving under special
conditions ..................138, 151, 154
sand .........................................153
snow and ice ...........................155
through water .................153, 158
E
Emergencies, roadside
jump-starting ..........................209
Emergency Flashers .................192
Emission control system ..........253
Engine ........................................284
cleaning ...................................226
coolant .....................................240
diesel ...........................................7
fail-safe coolant ......................244
idle speed control ...................238
lubrication
specifications ..................281, 284
refill capacities ........................278
service points ..........................234
starting after a collision .........192
Engine block heater .................128
Engine oil ..................................235
checking and adding ..............235
dipstick ....................................235
filter, specifications ........237, 277
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
300
