FORD 2013 F-550 v.3 - Manual (Page 189)

IMPORTANT SAFETY PRECAUTIONS
WARNING: Do not overfill the fuel tank. The pressure in an
overfilled tank may cause leakage and lead to fuel spray and fire.
WARNING: The fuel system may be under pressure. If the fuel
filler cap is venting vapor or if you hear a hissing sound, wait
until it stops before completely removing the fuel filler cap. Otherwise,
fuel may spray out and injure you or others.
WARNING: If you do not use the proper fuel filler cap, excessive
vacuum in the fuel tank may damage the fuel system or cause
the fuel cap to disengage in a collision, which may result in serious
personal injury.
WARNING: Automotive fuels can cause serious injury or death if
misused or mishandled.
WARNING: Fuel ethanol and gasoline may contain benzene,
which is a cancer-causing agent.
WARNING: When refueling always shut the engine off and never
allow sparks or open flames near the filler neck. Never smoke
while refueling. Fuel vapor is extremely hazardous under certain
conditions. Care should be taken to avoid inhaling excess fumes.
WARNING: The flow of fuel through a fuel pump nozzle can
produce static electricity, which can cause a fire if fuel is pumped
into an ungrounded fuel container.
WARNING: Flexible fuel components and standard unleaded
gasoline fuel components are not interchangeable. If your vehicle
is not serviced in accordance with flexible fuel vehicles procedures,
damage may occur and your warranty may be invalidated.
188 Fuel and Refueling
2013 F-250/350/450/550 (f23)
Owners Guide gf, 3rd Printing, December 2012
USA (fus)