Ford 2009 Focus v.1 Manuel d'utilisateur télécharger pdf (Page 252)

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 two 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.

Calculating fuel economy

1. Fill the fuel tank completely and record the initial odometer reading

(in miles or kilometers).

2. Each time you fill the tank, record the amount of fuel added (in

gallons or liters).

3. After at least three to five tank fill-ups, fill the fuel tank and record

the current odometer reading.

4. Subtract your initial odometer reading from the current odometer

reading.

5. Follow one of the simple calculations in order to determine fuel

economy:

Calculation 1: Divide total miles traveled by total gallons used.

Calculation 2: Multiply liters used by 100, then divide by total

kilometers traveled.

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 under current driving conditions. Additionally, keeping records

during summer and winter will show how temperature impacts fuel

economy. In general, lower temperatures give lower fuel economy.

2009 Focus (foc)

Owners Guide, 1st Printing

USA (fus)

Maintenance and Specifications

252

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Ford 2009 Focus v.1 Manuel d'utilisateur Page 252