fuel reserve FORD TAURUS 1999 3.G Owners Manual

Fuel gauge
Displays approximately
how much fuel is in
the fuel tank (when
the key is in the ON
position). The fuel
gauge may vary slightly
when the vehicle is in
motion. The ignition
should be in the OFF
position while the vehicle is being refueled. When
the gauge first indicates empty, there is a small
amount of reserve fuel in the tank. When refueling
the vehicle from empty indication, the amount of
fuel that can be added will be less than the
advertised capacity due to the reserve fuel.
A minimum of six gallons must be added or removed
from the fuel tank in order for the gauge to
instantaneously update. If less than six gallons is the
change, the gauge will take between five to ten
minutes to update.
EF
Instrumentation
15

ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel
economy is you, the driver. You must gather
information as accurately and consistently as
possible. Fuel expense, frequency of fillups or fuel
gauge readings are NOT accurate as a measure of
fuel economy. We do not recommend taking fuel
economy measurements during the first 1 600 km
(1 000 miles) of driving (engine break-in period).
You will get a more accurate measurement after
3 000 km±5 000 km (2 000 miles-3 000 miles).
Filling the tank
The advertised fuel capacity of the fuel tank on your
vehicle is equal to the rated refill capacity of the fuel
tank as listed in theRefill Capacitieschart in this
ªOwner Guideº. The advertised capacity is the
amount of the Indicated Capacity and the Empty
Reserve combined. Indicated Capacity is the
difference in the amount of fuel in a full tank and a
tank when the fuel gauge indicates empty. Empty
Reserve is the small amount of usable fuel remaining
in the fuel tank after the fuel gauge indicates empty.
The amount of Empty Reserve varies and
should not be relied upon to increase driving
range. When refueling your vehicle after the
fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised
capacity of the fuel tank due to the empty
reserve still present in the tank.
For consistent results when filling the fuel tank:
²Use the same filling rate setting (low Ð medium
Ð high) each time the tank is filled.
²Allow three automatic click-offs when filling.
²Always use fuel with the recommended octane
rating.
Maintenance and care
171