Maintenance and specifications – FORD 2003 F-550 v.1 User Manual
Page 212
• 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