•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between the top gears 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 toMaintenance product
specifications and capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found inscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (as much as
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
8–10 miles (12–16 km) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
•Four-wheel-drive operation (if equipped) is less fuel efficient than
two-wheel-drive operation.
•Close windows for high speed driving.
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
288
wiper blades ............................261
Clock ............................................54
Compass, electronic
set zone adjustment .................72
Console ........................................53
overhead ..............................51–52
rear ............................................53
Controls
power seat ...............................107
steering column ........................64
Coolant
checking and adding ..............275
refill capacities ................278, 297
specifications ..........................297
Cruise control (see Speed
control) ........................................61
Customer Assistance ................221
Ford Extended Service
Plan ..........................................254
Getting assistance outside
the U.S. and Canada ..............255
Getting roadside assistance ...221
Getting the service you
need .........................................250
Ordering additional owner’s
literature .................................256
Utilizing the
Mediation/Arbitration
Program ...................................254
D
Daytime running lamps
(see Lamps) ................................40
Defrost
rear window ..............................38
Dipstick
automatic transmission
fluid ..........................................293engine oil .................................270
Driving under special
conditions ..................209, 215, 218
sand .........................................216
snow and ice ...........................219
through water .................217, 220
DVD system .................................32
E
Electronic message center .........71
Emergencies, roadside
jump-starting ..........................241
Emission control system ..........289
Engine ........................................300
cleaning ...................................260
coolant .....................................275
fail-safe cooling .......................279
idle speed control ...................273
lubrication specifications .......297
refill capacities ........................297
service points ..........................267
starting after a collision .........223
Engine block heater .................195
Engine oil ..................................270
change oil soon warning,
message center .......................270
checking and adding ..............270
dipstick ....................................270
filter, specifications ........272, 296
recommendations ...................272
refill capacities ........................297
specifications ..........................297
Exhaust fumes ..........................195
F
Fail safe cooling ........................279
Floor mats ...................................83
2007 Navigator(nav)
Owners Guide (post-2002-fmt)
USA(fus)
Index
306
