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Maintenance and specifications – FORD 2003 F-550 v.1 User Manual

Page 212

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• Revving the engine before turning it off mayreduce fuel economy.
• Using the air conditioner or defroster mayreduce fuel economy.
• You maywant to turn off the speed control in hillyterrain if

unnecessaryshifting between third and fourth gear occurs.
Unnecessaryshifting of this type could result in reduced fuel
economy.

• Warming up a vehicle on cold mornings is not required and may

reduce fuel economy.

• Resting your foot on the brake pedal while driving may reduce fuel

economy.

• Combine errands and minimize stop-and-go driving.

Maintenance

• Keep tires properlyinflated and use onlyrecommended size.
• Operating a vehicle with the wheels out of alignment will reduce fuel

economy.

• Use recommended engine oil. Refer to Lubricant specifications in

this chapter.

• Perform all regularlyscheduled maintenance items. Follow the

recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.

Conditions

• Heavilyloading a vehicle or towing a trailer mayreduce fuel economy

at anyspeed.

• Carrying unnecessaryweight mayreduce fuel economy(approximately

0.4 km/L [1 mpg] is lost for every180 kg [400 lb] of weight carried).

• Adding certain accessories to your vehicle (for example bug

deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.

• Using fuel blended with alcohol maylower fuel economy.
• Fuel economymaydecrease with lower temperatures during the first

12–16 km (8–10 miles) of driving.

• Driving on flat terrain offers improved fuel economyas compared to

driving on hillyterrain.

• Transmissions give their best fuel economywhen operated in the top

cruise gear and with steadypressure on the gas pedal.

Maintenance and Specifications

212

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