FORD 2002 Mustang v.1 - Manual (Page 228)

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 fuel remaining in the fuel tank after the fuel
gauge indicates empty.
The amount of usable fuel in the 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:
• Turn the engine/ignition switch to the off position
prior to refueling, an error in the reading will
result if the engine is left running.
• Use the same filling rate setting (low — medium
— high) each time the tank is filled.
• Allow no more than 2 automatic click-offs when
filling.
• Always use fuel with the recommended octane
rating.
• Use a known quality gasoline, preferably a
national brand.
• Use the same side of the same pump and have
the vehicle facing the same direction each time
you fill up.
• Have the vehicle loading and distribution the
same every time.
Your results will be most accurate if your filling
method is consistent.
Maintenance and Specifications
228