Ford 2007 F-650 Owner's Manual page 192

Many of the world's automakers approved the World-wide Fuel Charter
that recommends diesel fuel specifications to provide improved
performance and emission control system protection for your vehicle.
Diesel fuel that meet the World-wide Fuel Charter should be used when
available. Ask your fuel supplier about fuel that meet the World-Wide
Fuel Charter.
Running out of fuel
Avoid running out of fuel as this will allow air to enter the fuel system,
which will make restarting the vehicle difficult.
If you have run out of fuel:
• If your vehicle is equipped with dual fuel tanks, add at least 4–5
gallons (15–19 liters) of fuel to each tank before attempting to restart
the engine.
• If your vehicle is equipped with a Caterpillar engine, the fuel
system must be primed before attempting to restart the engine. Refer
to the engine operator's manual for instructions on priming the engine.
• Use caution not to overheat and damage the starter by cranking
the engine for an excessive period of time. You may need to crank the
engine for a longer time than normal. If the engine fails to start in 30
seconds, turn the ignition to the OFF position and wait for two
minutes before cranking the engine again.
• Any remaining trapped air will self-purge from the fuel system once
the engine starts running.
• The engine may run rough and produce white smoke while air is in
the fuel system. This is normal and should stop after a short period of
time.
FUEL CONSUMPTION IMPROVEMENT MEASURES
There are two important factors you can control to improve fuel
economy: the mechanical condition of your vehicle and how you drive it.
A properly maintained vehicle will deliver better performance than a
neglected vehicle. Always follow your maintenance schedule to keep your
vehicle in top operating condition.
Also, your driving habits have a significant influence on use of fuel. By
following these suggestions, you can stretch your fuel use:
• Avoid changes in speed as much as possible.
• Anticipate changing traffic conditions. Sudden stops and fast
acceleration waste fuel.
2007 F-650/750 (f67)
Supplement
USA (fus)
Maintenance and Specifications
191