•
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 to
Maintenance product
specifications and capacities
in this chapter.
•
Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in
scheduled 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.
Maintenance and Specifications
331
2012 Navigator
(nav)
Owners Guide, 1st Printing
USA
(fus)
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