3. The fuel cap may not have been securely tightened. SeeFuel filler
capin this chapter.
4. Driving through deep water - the electrical system may be wet.
These temporary malfunctions can be corrected by filling the fuel tank
with good quality fuel, properly tightening the fuel cap or letting the
electrical system dry out. After three driving cycles without these or any
other temporary malfunctions present, the
indicator should stay off
the next time the engine is started. A driving cycle consists of a cold
engine startup followed by mixed city/highway driving. No additional
vehicle service is required.
If the
indicator remains on, have your vehicle serviced at the first
available opportunity. Although some malfunctions detected by the
OBD-II may not have symptoms that are apparent, continued driving
with the
indicator on can result in increased emissions, lower fuel
economy, reduced engine and transmission smoothness, and lead to more
costly repairs.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If the
indicator is on, refer to the
description in the Warning lights and chimes section of the Instrument
Cluster chapter. Your vehicle may not pass the I/M test with the
indicator on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a “not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
372
ProCarManuals.com
POWER STEERING FLUID
Check the power steering fluid. Refer to thescheduled maintenance
informationfor the service interval schedules. If adding fluid is
necessary, use only MERCONAT F.
•Gasoline engine shown; diesel
engine similar. Refer to
Identifying components in the
engine compartmentin the6.0
and 6.4 Liter Power Stroke
Direct Injection Turbo Diesel
Owner Guide Supplement.
Check the fluid level when it is at ambient temperature, 20°F–80°F
(-7°C–25°C):
1. Check the fluid level in the reservoir. It should be between the MIN
and MAX range. Do not add fluid if the level is within this range.
2. If the fluid level is low. Add fluid to bring fluid level up to be between
the MIN and MAX range.
3. Start the engine.
4. While the engine idles, turn the steering wheel left and right several
times.
5. Turn the engine off.
6. Recheck the fluid level in the reservoir. Do not add fluid if the level is
between the MIN and MAX range.
7. If the fluid is low, add fluid in small amounts, continuously checking
the level until it is between the MIN and MAX range. Be sure to put the
cap back on the reservoir.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
373
ProCarManuals.com
The fluid level will drop slowly as the brakes wear, and will rise when the
brake components are replaced. Fluid levels between the “MIN” and
“MAX” lines are within the normal operating range; there is no need to
add fluid. If the fluid levels are outside of the normal operating range the
performance of your brake system could be compromised; seek service
from your authorized dealer immediately.
CLUTCH FLUID (IF EQUIPPED)
Check the clutch fluid level. Refer to thescheduled maintenance
informationfor the service interval schedules.
Use only a DOT 3 brake fluid designed to meet Ford specifications. Refer
toMaintenance product specifications and capacitiesin this chapter.
Carefully read cautionary information on product label. For
MEDICAL EMERGENCY INFORMATION, contact a physician or
Poison Control Center immediately; on Ford-Motorcraft products call:
1-800-959-3673 (FORD). Failure to follow these instructions may result
in personal injury.
During normal operation, the fluid level in the clutch reservoir should
remain constant or rise slightly. If the fluid level drops, refill the fluid
level to the step in the reservoir.
1. Clean the reservoir cap before
removal to prevent dirt and water
from entering the reservoir.
2. Remove cap and rubber
diaphragm from reservoir.
3. Add fluid until the level reaches
the step in the reservoir.
4. Reinstall rubber diaphragm and
cap onto reservoir.
TRANSMISSION FLUID
Checking automatic transmission fluid (if equipped)
Refer to yourscheduled maintenance informationfor scheduled
intervals for fluid checks and changes. Your transmission does not
consume fluid. However, the fluid level should be checked if the
transmission is not working properly, i.e., if the transmission slips or
shifts slowly or if you notice some sign of fluid leakage.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
375
ProCarManuals.com
Item Capacity Ford part nameFord part number /
Ford specification
Windshield washer fluid 3.5 quarts (3.3L)Motorcraft Premium
Windshield Washer
ConcentrateZC-32–A /
WSB-M8B16–A2
1Add 8 oz. (236 ml) of Additive Friction Modifier XL-3 or equivalent meeting Ford Specification
EST-M2C118–A for complete refill of limited slip Ford axles. Ford design rear axles contain a
synthetic lubricant that does not require changing unless the axle has been submerged in water.2Add the coolant type originally equipped in your vehicle.3Ensure the correct automatic transmission fluid is used. Transmission fluid requirements are
indicated on the dipstick blade or the dipstick handle. Check the container to verify the fluid being
added is of the correct type. Refer to yourscheduled maintenance informationto determine the
correct service interval.
Automatic transmissions that require MERCONSP should only use MERCONSP fluid.
Use of a dual usage fluid in an automatic transmission requiring MERCONSP may cause
transmission damage. Use of any fluid other than the recommended fluid may cause
transmission damage.4Service 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 ensure correct fluid level.5Indicates 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.6Use of synthetic or synthetic blend motor oil is not mandatory. Engine oil need only meet the
requirements of Ford specification WSS-M2C930-A and the API Certification mark.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
386
ProCarManuals.com
Climate control (see Air
conditioning or Heating) ............80
Clock adjust
6-CD in dash .............................34
AM/FM/CD .................................28
Clutch
fluid ..........................................375
operation while driving ..........269
recommended shift speeds ....270
Compass, electronic
set zone adjustment
...............134
Console
......................................120
overhead
..................................100
Controls
power seat
...............................165
steering column
......................112
Coolant
checking and adding
..............356
refill capacities
................359, 383
Cruise control
(see Speed control)
..................109
Customer Assistance
................294
Ford accessories for your
vehicle
.....................................345
Ford Extended Service
Plan
..........................................333
Getting assistance outside the
U.S. and Canada
.....................334
Getting roadside assistance
...294
Getting the service you
need
.........................................329
Ordering additional owner’s
literature
.................................335
Utilizing the
Mediation/Arbitration
Program
...................................333D
Daytime running lamps
(see Lamps) ................................86
Dipstick
automatic transmission
fluid ..........................................375
engine oil .................................351
Driveline universal joint and
slip yoke ....................................380
Driving under special
conditions ..................269, 284, 288
sand .........................................286
snow and ice ...........................288
through water .................287, 290
DVD system .................................48
E
Electronic message
center .................................120, 129
Emergencies, roadside
jump-starting ..........................322
Emergency Flashers .................296
Emission control system ..........370
Engine ........................................387
cleaning ...................................338
coolant .....................................356
diesel ...........................................8
fail-safe cooling .......................360
idle speed control ...................354
refill capacities ........................383
service points ..................348–349
starting after a collision .........296
Engine oil ..................................351
checking and adding ..............351
dipstick ....................................351
filter, specifications ........353, 382
recommendations ...................353
refill capacities ........................383
Event data recording ....................6
Exhaust fumes ..........................258
F
Fail safe cooling ........................360
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
393
ProCarManuals.com