2004 Ford F350 Owner Guide 3rd Printing - Page 254

Maintenance and Specifications Cleaner air Ford endorses the use of reformulated "cleaner-burning" gasolines to improve air quality. Running out of fuel Avoid running out of fuel because this situation may have an adverse affect on powertrain components. If you have run out of fuel: • You may need to cycle the ignition from OFF to ON several times after refueling, to allow the fuel system to pump the fuel from the tank to the engine. • Your Service engine soon indicator may come on. For more information on the Service engine soon indicator, refer to the Instrument cluster chapter. Fuel Filter For fuel filter replacement, see your dealer or a qualified service technician. Refer to the scheduled maintenance guide for the appropriate intervals for changing the fuel filter. Replace the fuel filter with an authorized Motorcraft part. The customer warranty may be void for any damage to the fuel system if an authorized Motorcraft fuel filter is not used. ESSENTIALS OF GOOD FUEL ECONOMY Measuring techniques Your best source of information about actual fuel economy is you, the driver. You must gather information as accurately and consistently as possible. Fuel expense, frequency of fill-ups or fuel gauge readings are NOT accurate as a measure of fuel economy. We do not recommend taking fuel economy measurements during the first 1,600 km (1,000 miles) of driving (engine break-in period). You will get a more accurate measurement after 3,000 km-5,000 km (2,000 miles-3,000 miles). Filling the tank The advertised fuel capacity of the fuel tank on your vehicle is equal to the rated refill capacity of the fuel tank as listed in the Refill capacities section of this chapter. 254 2004 F250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA English (fus)