
Vehicle Symbol Glossary
Power Windows
Front/Rear Power Window Lockout
Child Safety Door
Lock/Unlock Interior Luggage
Compartment Release
Symbol
Panic Alarm Engine Oil
Engine Coolant Engine Coolant
Temperature
Do Not Open When Hot Battery
Avoid Smoking, Flames,
or Sparks Battery Acid
Explosive Gas Fan Warning
Power Steering Fluid Maintain Correct Fluid
Level MAX
MIN
Emission System Engine Air Filter
Passenger Compartment
Air Filter Jack
Check Fuel Cap Low Tire Pressure
Warning
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Introduction
11

• Do not operate the vehicle with a low power steering pump fluid level
(below the FULL COLD mark on the dipstick).
If the power steering system breaks down (or if the engine is turned
off), you can steer the vehicle manually, but it takes more effort.
If the steering wanders or pulls, check for:
• an improperly inflated tire
• uneven tire wear
• loose or worn suspension components
• loose or worn steering components
• improper steering alignment
If any steering components are serviced or replaced, install new
fasteners (many are coated with thread adhesive or have prevailing
torque features which may not be re-used). Never re-use a bolt or nut.
Torque fasteners to specifications in Workshop Manual .
A high crown in the road or high crosswinds may also make the steering
seem to wander/pull.
TRACTION-LOK AXLE (IF EQUIPPED)
This axle provides added traction on slippery surfaces, particularly when
one wheel is on a poor traction surface. Under normal conditions, the
Traction-Lok axle functions like a standard rear axle. The axle may
exhibit a slight noise or vibration in tight turns with low vehicle speed.
This is normal behavior and indicates the axle is working.
PREPARING TO DRIVE YOUR VEHICLE
Utility vehicles have a significantly higher rollover rate than
other types of vehicles.
In a rollover crash, an unbelted person is significantly more likely
to die than a person wearing a safety belt.
Your vehicle has larger tires and increased ground clearance, giving the
vehicle a higher center of gravity than a passenger car.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Driving
175

IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
5.4L V8 gasoline engines
Refer to the 6.0 Liter Power Stroke Direct Injection Turbo Diesel
Owner’s Guide Supplement for diesel engine component locations.
1. Transmission fluid dipstick (automatic transmission)
2. Air filter assembly
3. Engine coolant reservoir
4. Brake fluid reservoir
5. Clutch fluid reservoir (manual transmission)
6. Power distribution box
7. Power steering fluid reservoir
8. Engine oil dipstick
9. Engine oil filler cap
10. Windshield washer fluid reservoir
11. Battery
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Maintenance and Specifications
251

6.8L V10 gasoline engine
Refer to the 6.0 Liter Power Stroke Direct Injection Turbo Diesel
Owner’s Guide Supplement for diesel engine component locations.
1. Transmission fluid dipstick (automatic transmission)
2. Engine coolant reservoir
3. Brake fluid reservoir
4. Clutch fluid reservoir (manual transmission)
5. Power distribution box
6. Power steering fluid reservoir
7. Air filter assembly
8. Engine oil dipstick
9. Engine oil filler cap
10. Windshield washer fluid reservoir
11. Battery 1 2 3 4 5
10 9 8 7 611
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)Maintenance and Specifications
252

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.
POWER STEERING FLUID
Check the power steering fluid.
Refer to the scheduled maintenance
guide for the service interval
schedules. If adding fluid is
necessary, use only MERCON AT F.
Check the fluid level when it is at ambient temperature, 20°F–80°F
(-7°C–25°C):
1. Check the fluid level on the dipstick. It should be between the arrows
in the FULL COLD 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 arrows in the FULL COLD 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 on the dipstick. Do not add fluid if the level is
between the arrows in the FULL COLD range.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Maintenance and Specifications
277

Fluid Ford Part Name Application Capacity
Engine oil
(includes filter
change) - diesel
engine Refer to your 6.0 Liter Power Stroke Direct Injection
Turbo Diesel Owner’s Guide Supplement
Fuel tank N/A Mid-ship tank
(optional on
Chassis Cab) 19.0 gallons
(71.9L )
Short box 30.5 gallons
(115.5L)
Long box 38.0 gallons
(143.9L)
Aft axle 40.0 gallons
(151.4L)
Power steering
fluid Motorcraft
MERCON AT F All Fill to FULL
COLD range on
dipstick
Transfer case
fluid Motorcraft
MERCON AT F 4x4 vehicles 2.0 quarts
(1.9L)
Manual
transmission fluid Motorcraft
MERCON AT F 6-speed manual 5.8 quarts
(5.5L) 4
Automatic
transmission
fluid 3
Motorcraft
MERCON SP
AT F TorqShift
(5–speed) 17.5 quarts
(16.6L) 5
(includes
remote filter
element change)
Windshield
washer fluid Motorcraft
Premium
Windshield
Washer
Concentrate All 4.25 quarts
(4.0L)1
Add 8 oz. (236 ml) of Additive Friction Modifier XL-3 or equivalent
meeting Ford Specification EST-M2C118–A for complete refill of limited
slip axles. Ford design rear axles contain a synthetic lubricant that does
not require changing unless the axle has been submerged in water. Dana
rear axles also contain a synthetic lubricant but do require a change.
Refer to your scheduled maintenance information for change intervals
on Dana rear axles. 2
Add the coolant type originally equipped in your vehicle.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)Maintenance and Specifications
288

Item Ford part name
or equivalent Ford part
number Ford
specification
Engine oil Motorcraft SAE
5W-20 Premium
Synthetic Blend
Motor Oil (US)
Motorcraft SAE
5W-20 Super
Premium Motor
Oil (Canada) XO-5W20-QSP
(US)
CXO-5W20–LSP12
(Canada) WSS-M2C930-A
and API
Certification
Mark
Hinges, latches,
striker plates,
fuel filler door
hinge and seat
tracks Multi-Purpose
Grease XG–4 or XL-5 ESB-M1C93–B
Lock cylinders Motorcraft
Penetrating and
Lock Lubricant XL-1 none
Transmission
/parking brake
linkages and
pivots, brake and
clutch pedal
shaft (if
equipped) Motorcraft
Premium
Long-Life Grease XG-1-C or
XG-1-K ESA-M1C75-B
Steering linkage,
knuckle ball
joints
(F-450/550) and
trackbar ball
joint (F-450/550) Motorcraft
Premium
Long-Life Grease XG-1-C or
XG-1-K WSD-M1C227-A
Power steering
fluid and transfer
case fluid (if
equipped) Motorcraft
MERCON AT F XT-2-QDX MERCON
Manual
transmission
(6-speed) Motorcraft
MERCON AT F 2
XT-2-QDX MERCON
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus) Maintenance and Specifications
291

K
Keyless entry system .................86
Keys
positions of the ignition .........167
L
Lamps
autolamp system .......................39
daytime running light ...............40
fog lamps ...................................40
headlamps .................................39
headlamps, flash to pass ..........41
instrument panel, dimming .....41
interior lamps ...........................45
replacing bulbs ...................45–53
Lane change indicator
(see Turn signal) ........................44
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........173
speed control ............................63
Load limits .................................148
Loading instructions .................155
Locks
childproof ..................................81
Lubricant specifications ...........290
Lug nuts ....................................225
Lumbar support, seats ...............95
M
Manual transmission .................180
fluid capacities ........................287
reverse .....................................181
Message center .....................68–70
english/metric button ...............74
system check button ................73
warning messages .....................75 Mirrors .........................................55
automatic dimming rearview
mirror ........................................58
fold away ...................................60
heated ........................................59
side view mirrors (power) .......58
signal .........................................59
Moon roof ....................................66
Motorcraft parts ................266, 286
O
Octane rating ............................270
Oil (see Engine oil) ..................254
Overdrive .....................................55
P
Parking brake ............................173
Parts (see Motorcraft parts) ....286
Pedals (see Power adjustable
foot pedals) .................................61
Power adjustable foot pedals .....61
Power distribution box
(see Fuses) ...............................211
Power door locks ........................80
Power mirrors .............................58
Power point .................................56
Power steering ..........................174
fluid, checking and adding ....277
fluid, refill capacity ................287
fluid, specifications .................290
Power Windows ...........................57
Preparing to drive your
vehicle ........................................175
R
Radio ..........................20, 22, 25, 28
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)Index
308