Page 305 of 352

cotton cloth; you may also use Motorcraft Dash & Vinyl Cleaner
(ZC-38-A) on the instrument panel and interior trim areas.
•Avoid cleaners or polishes that increase the gloss of the upper portion
of the instrument panel. The dull finish in this area helps protect the
driver from undesirable windshield reflection.
•Be certain to wash or wipe your hands clean if you have been in
contact with certain products such as insect repellent and suntan
lotion in order to avoid possible damage to the interior painted
surfaces.
•Do not use household or glass cleaners as these may damage the
finish of the instrument panel, interior trim and cluster lens.
Do not use chemical solvents or strong detergents when cleaning
the steering wheel or instrument panel to avoid contamination of
the airbag system.
If a staining liquid like coffee/juice has been spilled on the instrument
panel or on interior trim surfaces, clean as follows:
1. Wipe up spilled liquid using a clean, white, cotton cloth.
2. Apply Motorcraft Deluxe Leather and Vinyl Cleaner (ZC-11-A) [In
Canada use Motorcraft Multi-Purpose Cleaner (CXC-101)] to the wiped
area and spread around evenly.
3. Apply more Motorcraft cleaner to a clean, white, cotton cloth and
press the cloth onto the soiled area–allow this to set at room
temperature for 30 minutes.
4. Remove the soaked cloth, and if it is not soiled badly, use this cloth to
clean the area by using a rubbing motion for 60 seconds.
5. Following this, wipe area dry with a clean, white, cotton cloth.
INTERIOR
For fabric, carpets, cloth seats, safety belts and seats equipped with side
airbags:
•Remove dust and loose dirt with a vacuum cleaner.
•Remove light stains and soil with Motorcraft Professional Strength
Carpet & Upholstery Cleaner (ZC-54).
•If grease or tar is present on the material, spot-clean the area first
with Motorcraft Spot and Stain Remover (ZC-14).
•If a ring forms on the fabric after spot cleaning, clean the entire area
immediately (but do not oversaturate) or the ring will set.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Cleaning
305
Page 306 of 352

•Do not use household cleaning products or glass cleaners, which can
stain and discolor the fabric and affect the flame retardant abilities of
the seat materials.
Do not use cleaning solvents, bleach or dye on the vehicle’s
safety belts, as these actions may weaken the belt webbing.
Do not use chemical solvents or strong detergents when cleaning
the seat-mounted side airbag (vehicles equipped with
seat-mounted side airbags only). Such products could contaminate the
side airbag system and affect performance of the side airbag in a
collision.
CLEANING THE CLIMATE CONTROLLED SEATS (IF EQUIPPED)
Remove dust and loose dirt with a whisk broom or a vacuum cleaner.
Remove fresh spots immediately. Clean the seat with a damp cloth, using
a mild soap and water solution, if necessary.
LEATHER SEATS
Your leather seating surfaces have a clear, protective coating over the
leather.
•To clean, use a soft cloth with Motorcraft Deluxe Leather and Vinyl
Cleaner (ZC-11-A). Dry the area with a soft cloth.
•To help maintain its resiliency and color, use the Motorcraft Deluxe
Leather Care Kit (ZC-11-D), available from your authorized dealer.
•Do not use household cleaning products, alcohol solutions, solvents or
cleaners intended for rubber, vinyl and plastics, or oil/petroleum-based
leather conditioners. These products may cause premature wearing of
the clear, protective coating.
Note:In some instances, color or dye transfer can occur when wet
clothing comes in contact with leather upholstery. If this occurs, the
leather should be cleaned immediately to avoid permanent staining.
UNDERBODY
Flush the complete underside of your vehicle frequently. Keep body and
door drain holes free from packed dirt.
FORD AND LINCOLN MERCURY CAR CARE PRODUCTS
Your Ford or Lincoln Mercury authorized dealer has many quality
products available to clean your vehicle and protect its finishes. These
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Cleaning
306
Page 307 of 352

quality products have been specifically engineered to fulfill your
automotive needs; they are custom designed to complement the style
and appearance of your vehicle. Each product is made from high quality
materials that meet or exceed rigid specifications. For best results, use
the following products or products of equivalent quality:
Motorcraft Bug and Tar Remover (ZC-42)
Motorcraft Car Wash (Canada only) (CXC-21)
Motorcraft Multi-Purpose Cleaner (Canada only) (CXC-101)
Motorcraft Custom Bright Metal Cleaner (ZC-15)
Motorcraft Custom Clear Coat Polish (ZC-8-A)
Motorcraft Custom Vinyl Protectant (U.S. only) (ZC-40-A)
Motorcraft Dash and Vinyl Cleaner (ZC-38–A)
Motorcraft Deluxe Leather and Vinyl Cleaner (U.S. only) (ZC-11-A)
Motorcraft Leather Care Kit (ZC-11-D)
Motorcraft Detail Wash (ZC-3-A)
Motorcraft Dusting Cloth Mitt (ZC-47)
Motorcraft Dusting Cloth (ZC-24)
Motorcraft Engine Shampoo and Degreaser (U.S. only) (ZC-20)
Motorcraft One Step Wash and Wax Concentrate (ZC-6-A)
Motorcraft Paint Sealant (ZC-45)
Motorcraft Premium Glass Cleaner (Canada only) (CXC-100)
Motorcraft Premium Liquid Wax (ZC-53-A)
Motorcraft Premium Windshield Washer Concentrate (ZC-32-A)
Motorcraft Professional Strength Carpet & Upholstery Cleaner (ZC-54)
Motorcraft Spot and Stain Remover (U.S. only) (ZC-14)
Motorcraft Tire Clean and Shine (ZC-28)
Motorcraft Triple Clean (U.S. only) (ZC-13)
Motorcraft Ultra-Clear Spray Glass Cleaner (ZC-23)
Motorcraft Vinyl Cleaner (Canada only) (CXC-93)
Motorcraft Wheel and Tire Cleaner (ZC-37-A)
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Cleaning
307
Page 308 of 352

SERVICE RECOMMENDATIONS
To help you service your vehicle, we providescheduled maintenance
informationwhich makes tracking routine service easy.
If your vehicle requires professional service, your authorized dealer can
provide the necessary parts and service. Check yourWarranty Guideto
find out which parts and services are covered.
Use only recommended fuels, lubricants, fluids and service parts
conforming to specifications. Motorcraft parts are designed and built to
provide the best performance in your vehicle.
PRECAUTIONS WHEN SERVICING YOUR VEHICLE
•Do not work on a hot engine.
•Make sure that nothing gets caught in moving parts.
•Do not work on a vehicle with the engine running in an enclosed
space, unless you are sure you have enough ventilation.
•Keep all open flames and other lit material away from the battery and
all fuel related parts.
Turn off the power running boards, if equipped, before working
under the vehicle, jacking or placing any object under the
vehicle. Never place your hand between the extended running board
and the vehicle. A moving running board may cause injury.
Working with the engine off
1. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
2. Turn off the engine and remove the key.
3. Block the wheels to prevent the vehicle from moving unexpectedly.
Working with the engine on
1. Set the parking brake and shift to P (Park).
2. Block the wheels.
To reduce the risk of vehicle damage and/or personal burn
injuries, do not start your engine with the air cleaner removed
and do not remove it while the engine is running.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
308
Page 309 of 352
OPENING THE HOOD
1. Inside the vehicle, pull the hood
release handle located under the
bottom of the instrument panel.
2. Go to the front of the vehicle and
release the auxiliary latch that is
located under the front center of
the hood.
3. Lift the hood until the lift
cylinders hold it open.
IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
5.4L 3V–V8 engine
1. Windshield washer fluid reservoir
2. Engine oil dipstick
3. Brake fluid reservoir
4. Engine coolant reservoir
5. Air filter assembly
6. Power steering fluid reservoir
7. Power distribution box
8. Engine oil filler cap
9. Battery
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
309
Page 310 of 352

WINDSHIELD WASHER FLUID
Add fluid to fill the reservoir if the
level is low. In very cold weather, do
not fill the reservoir completely.
Only use a washer fluid that meets
Ford specification WSB-M8B16-A2.
Do not use any special washer fluid
such as windshield water repellent
type fluid or bug wash. They may
cause squeaking, chatter noise,
streaking and smearing. Refer to the
Maintenance product
specifications and capacitiessection in this chapter.
State or local regulations on volatile organic compounds may restrict the
use of methanol, a common windshield washer antifreeze additive.
Washer fluids containing non-methanol antifreeze agents should be used
only if they provide cold weather protection without damaging the
vehicle’s paint finish, wiper blades or washer system.
If you operate your vehicle in temperatures below 40° F (4.5°C),
use washer fluid with antifreeze protection. Failure to use
washer fluid with antifreeze protection in cold weather could result in
impaired windshield vision and increase the risk of injury or accident.
Note:Do not put washer fluid in the engine coolant reservoir. Washer
fluid placed in the cooling system may harm engine and cooling system
components.
Checking and adding washer fluid for the liftgate
Washer fluid for the liftgate is supplied by the same reservoir as the
windshield.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
310
Page 311 of 352

CHANGING THE WIPER BLADES
It is recommended that wiper blades are renewed before winter.
To replace the wiper blades:
1. Fold back the wiper arm and
position the wiper blade at right
angles to the wiper arm.
2. To remove, press the retaining
clip (A) to disengage the wiper
blade, then pull the blade down
toward the windshield to remove it
from the arm.
3. Install the new wiper blade on the
arm and press it into place until a click is heard.
Replace wiper blades at least once per year for optimum performance.
Poor wiper quality can be improved by cleaning the wiper blades and
windshield, refer toWindows and wiper bladesin theCleaning
chapter.
To prolong the life of the wiper blades, it is highly recommended to
scrape off the ice on the windshield before turning on the wipers. The
layer of ice has many sharp edges and can damage the micro edge of the
wiper rubber element.
Changing the rear window wiper blade
To replace the rear wiper blade:
1. Pull the wiper arm as far away from the glass as possible. Do not use
excessive force because it can break the wiper arm. Hold it there until
the next step.
2. Grasp the wiper blade and rotate
it away from the wiper arm using
moderate force until it disengages
from the wiper arm.
3. Once the wiper blade is loose,
slide it away form the wiper arm.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
311
Page 312 of 352
4. To attach the new wiper to the
wiper arm, align the cross pin and
keyway (denoted with the arrows)
and firmly press the wiper blade
into the wiper arm until an audible
snap is heard.
ENGINE OIL
Checking the engine oil
Refer to thescheduled maintenance informationfor the appropriate
intervals for checking the engine oil.
1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait a few minutes for the oil to drain into the
oil pan.
3. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the
engine oil level dipstick.
6. Wipe the dipstick clean. Insert the dipstick fully, then remove it again.
•If the oil level iswithin this
range,the oil level is acceptable.
DO NOT ADD OIL.
2008 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
312