Filling The Tank; Calculating Fuel Economy - Ford 1998 Mustang Owner's Manual

Maintenance and care

Filling the tank

For consistent results:
Use the same filling rate setting (low — medium
— high) each time the tank is filled.
Allow three automatic click-offs when filling.
Always use the recommended octane rating of 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.

Calculating fuel economy

1. Fill the fuel tank completely and record the initial
odometer reading.
2. Each time you fill the tank, record the amount of
fuel added (in liters or gallons).
3. After at least three to five tank fill-ups, fill the
fuel tank and record the current kilometer (mileage)
reading.
4. Follow one of the simple calculations in order to
determine fuel economy:
Multiply liters used by 100, then divide by total
kilometers traveled.
Divide total miles traveled by total gallons used.
Keep a record for at least one month and record the
type of driving (city or highway). This will provide
an accurate estimate of the vehicle's fuel economy.
Additionally, keeping records during summer and
winter will show how temperature impacts fuel
economy. In general, lower temperatures give lower
fuel economy.
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