FORD 2013 F-550 v.2 - Manual (Page 187)

Cold Weather Starting (Flexible Fuel Vehicles Only)
The starting characteristics of all grades of E-85 ethanol make it
unsuitable for use when ambient temperatures fall below 0°F (-18°C).
Consult your fuel distributor for the availability of winter grade ethanol.
As the outside temperature approaches freezing, ethanol fuel distributors
should supply winter grade ethanol (same as with unleaded gasoline).
If summer grade ethanol is used in cold weather conditions, 0°F to 32°F
(-18°C to 0°C), you may experience increased cranking times, rough idle
or hesitation until the engine has warmed up.
You may experience a decrease in peak performance when the engine is
cold when operating on E-85 ethanol.
Do not crank the engine for more than 10 seconds at a time as starter
damage may occur. If the engine fails to start, turn the key to off and
wait 30 seconds before trying again.
Do not use starting fluid such as ether in the air intake system. Such
fluid could cause immediate explosive damage to the engine and possible
personal injury.
If you should experience cold weather starting problems on E-85 ethanol,
and neither an alternative brand of E-85 ethanol nor an engine block
heater is available, the addition of unleaded gasoline to your tank improves
cold starting performance. Your vehicle is designed to operate on E-85
ethanol alone, unleaded gasoline alone, or any mixture of the two.
If the Engine Fails to Start Using the Preceding Instructions
(Flexible Fuel Vehicles Only)
1. Press and hold down the accelerator 1/3 to 1/2 way to floor, then
crank the engine.
2. When the engine starts, release the key, then gradually release the
accelerator pedal as the engine speeds up. If the engine still fails to
start, repeat Step 1.
Guarding Against Exhaust Fumes
WARNING: If you smell exhaust fumes inside your vehicle,
have this checked immediately. Do not drive your vehicle if you
smell exhaust fumes. Carbon monoxide is present in exhaust fumes.
Take precautions to avoid its dangerous effects.
186 Starting and Stopping the Engine
2013 F-250/350/450/550 (f23)
Owners Guide gf, 2nd Printing, December 2012
USA (fus)