Ford E-250 (2009 year). Manual — part 71

• FFV fuel tanks may contain zero to 85 percent ethanol. Any fuel

blends containing gasoline and ethanol should be treated the same as
“Fuel Ethanol.” To identify if your vehicle is an FFV, it may be
equipped with a yellow fuel cap with the text “E85/Gasoline”, or check
if there is a label on the fuel filler door.

Pure ethanol is the alcohol which is the intoxicating agent in liquor, beer
and wine. It is distilled from the fermentation of plants such as field corn
and sugar cane. When ethanol is produced for use in motor fuels, a small
amount of gasoline is added to make it unfit for beverage use. The
resulting ethanol blend is called denatured fuel ethanol meaning that it is
denatured with 2% to 5% gasoline and is suitable for automotive use.

During the summer season, fuel ethanol may contain a maximum of 85%
denatured ethanol (Ed85) and 15% unleaded gasoline. The fuel ethanol
has a higher octane rating than unleaded regular or premium gasoline
and this allows the design of engines with greater efficiency and power.

Winter blends may contain up to 75% denatured ethanol (Ed75) and up
to 25% unleaded gasoline to enhance cold engine starts. Severely cold
weather may require additional measures for reliable starting. Refer to
Starting in the Driving chapter.

Ethanol is more chemically active than gasoline. It corrodes some metals
and causes some plastic and rubber components to swell, break down or
become brittle and crack, especially when mixed with gasoline. Special
materials and procedures have been developed for flexible fuel vehicles
and the dispensers used by ethanol fuel providers.

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.

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.

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Refueling

WARNING: Fuel vapor burns violently and a fuel fire can cause
severe injuries. To help avoid injuries to you and others:

• Read and follow all the instructions on the pump island;
• Turn off your engine when you are refueling;
• Do not smoke if you are near fuel or refueling your vehicle;
• Keep sparks, flames and smoking materials away from fuel;
• Stay outside your vehicle and do not leave the fuel pump unattended

when refueling your vehicle — this is against the law in some places;

• Keep children away from the fuel pump; never let children pump

fuel.

Use the following guidelines to avoid electrostatic charge build-up when
filling an ungrounded fuel container:
• Place approved fuel container on the ground.
• DO NOT fill a fuel container while it is in the vehicle (including the

cargo area).

• Keep the fuel pump nozzle in contact with the fuel container while

filling.

• DO NOT use a device that would hold the fuel pump handle in the fill

position.

Fuel filler cap

Your fuel tank filler cap has an indexed design with a 1/4 turn on/off
feature.

When fueling your vehicle:

1. Turn the engine off.

2. Carefully turn the filler cap counterclockwise until it spins off.

3. Pull to remove the cap from the fuel filler pipe.

4. To install the cap, align the tabs on the cap with the notches on the
filler pipe.

5. Turn the filler cap clockwise 1/4 of a turn until it clicks at least once.

If the check fuel cap light

or a “check fuel cap” message comes on,

the fuel filler cap may not be properly installed. The light or message can
come on after several driving events after you’ve refueled your vehicle.

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286

At the next opportunity, safely pull off of the road, remove the fuel filler
cap, align the cap properly and reinstall it. The check fuel cap
light

or “check fuel cap” message may not reset immediately; it may

take several driving cycles for the check fuel cap light

or “check fuel

cap” message to turn off. A driving cycle consists of an engine start-up
(after four or more hours with the engine off) followed by city and
highway driving.

Continuing to drive with the check fuel cap light

or “check fuel cap”

message on may cause the

light to turn on as well.

If you must replace the fuel filler cap, replace it with a fuel filler
cap that is designed for your vehicle. The customer warranty may
be void for any damage to the fuel tank or fuel system if the
correct genuine Ford, Motorcraft or other certified fuel filler cap
is not used.

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
personal injury.

FFV (Flex Fuel Vehicle) fuel cap

If your vehicle is FFV capable, it will have a yellow colored fuel cap.

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287

Choosing the right fuel

If your vehicle is a flexible fuel vehicle (FFV), use only UNLEADED
FUEL and FUEL ETHANOL (Ed75–Ed85).

If your vehicle is not a flexible fuel vehicle (FFV), then only use
UNLEADED fuel or UNLEADED fuel blended with a maximum of 10%
ethanol. Do not use fuel ethanol (E85), diesel, methanol, leaded fuel or
any other fuel.

The use of leaded fuel is prohibited by law and could damage your
vehicle.

Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives.

Note: Use of any fuel other than those recommended may cause
powertrain damage, a loss of vehicle performance, and repairs may not
be covered under warranty.

Cleaner air

Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality, per the recommendations in the Choosing the right
fuel section.

Octane recommendations

Do not be concerned if your engine
sometimes knocks lightly. However,
if it knocks heavily under most
driving conditions while you are
using fuel with the recommended
octane rating, see your authorized dealer to prevent any engine damage.

Unleaded Gasoline Engines

Your vehicle is designed to use “Regular” unleaded gasoline with a pump
(R+M)/2 octane rating of 87. We do not recommend the use of gasolines
labeled as “Regular” in high altitude areas that are sold with octane
ratings less than 87.

FFV engine

Your vehicle is designed to use Fuel Ethanol (Ed75–Ed85),“Regular”
unleaded gasoline or any mixture of the two fuels.

Use of other fuels such as Fuel Methanol may cause powertrain
damage, a loss of vehicle performance, and your warranty may be
invalidated.

87

(R+M)/2 METHOD

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288