2008 Ford F150 Owner Guide 1st Printing - Page 364

Maintenance and Specifications Unleaded Gasoline engines If you are experiencing starting, rough idle or hesitation driveability problems during a cold start, try a different brand of "Regular" unleaded gasoline. "Premium" unleaded gasoline is not recommended because it may cause these problems to become more pronounced. If the problems persist, see your authorized dealer. FFV engine (if equipped) To identify if your vehicle is an FFV, it may be equipped with a yellow fuel cap with the writing "E85/Gasoline", or check if there is a label on the fuel filler door, or check your VIN. When checking the VIN, look for the engine type identifier (8th character). If your vehicle is an FFV, then the character will be labeled as a "V". It is best not to alternate repeatedly between gasoline and E85. If you do switch fuels, it is recommended that you add as much fuel as possible-at least half a tank. Do not add less than five gallons (18.9 L) when refueling. You should drive the vehicle immediately after refueling for at least five miles (8 km) to allow the vehicle to adapt to the change in ethanol concentration. If you operate your vehicle 50% or more of the time on ethanol, you should follow a different maintenance schedule. In addition to this it is also recommended to fill the fuel tank with regular unleaded gasoline once every 3,000 miles (4,828 km). See scheduled maintenance information for more information. Running out of fuel Avoid running out of fuel because this situation may have an adverse effect 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. On restarting, cranking time will take a few seconds longer than normal. • Normally, adding 1 gallon (3.8L) of fuel is enough to restart the engine. If the vehicle is out of fuel and on a steep grade, more than 1 gallon (3.8L) may be required. indicator may come on. For more • The Service engine soon indicator, refer to information on the Service engine soon Warning lights and chimes in the Instrument Cluster chapter. 364 2008 F-150 (f12) Owners Guide (post-2002-fmt) USA (fus)