Ford 1997 Aerostar Manual page 267

You may need to crank the engine several times
before the fuel system starts to pump fuel from
the tank to the engine.
Fuel Economy
Fuel economy is an estimate of the efficiency of
your vehicle and can be calculated as Miles Per
Gallon (MPG) or Liters Per 100 Kilometers
(L/100K). Do not calculate the fuel economy
during your vehicle's break-in period. This
would not be an accurate estimate of how much
fuel your vehicle will normally use.
To calculate fuel economy:
1. Fill the tank completely and record the
initial odometer reading.
2. Every time you buy fuel record the
amount (in gallons or liters) purchased.
3. After at least three to five tankfuls, fill the
fuel tank and record the final odometer
reading.
4. Use these equations to calculate your fuel
economy:
English: MPG = (total miles driven)
(gallons used)
Metric: L/100k = (100 x liters used)
kilometers driven)
Comparisons With Environmental
Protection Agency (EPA) and Transport
Canada (TC) Fuel Economy Estimates
EPA and TC fuel economy figures are obtained
from laboratory tests under simulated road
conditions and thus are estimates which may not
reflect the actual conditions you experience or
your personal style of driving. The EPA or TC
fuel economy estimate is not a guarantee that
you will achieve the fuel economy shown.
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