Ford 2012 F-550 v.2 Manuel d'utilisateur télécharger pdf (Page 393)

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.

Driving style — good driving and fuel economy habits

Give consideration to the lists that follow and you may be able to change

a number of variables and improve your fuel economy.

Habits

• Smooth, moderate operation can yield up to 10% savings in fuel.

• Steady speeds without stopping will usually give the best fuel

economy.

• Idling for long periods of time (greater than one minute) may waste

fuel.

• Anticipate stopping; slowing down may eliminate the need to stop.

• Sudden or hard accelerations may reduce fuel economy.

• Slow down gradually.

• Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%

less fuel than traveling at 65 mph [105 km/h]).

• Revving the engine before turning it off may reduce fuel economy.

• Using the air conditioner or defroster may reduce fuel economy.

• You may want to turn off the speed control in hilly terrain if

unnecessary shifting between the top gears occurs. Unnecessary

shifting of this type could result in reduced fuel economy.

Maintenance and Specifications

393

2012 F-250/350/450/550 (f23)

Owners Guide, 2nd Printing

USA (fus)

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Ford 2012 F-550 v.2 Manuel d'utilisateur Page 393