Black plate (38,1)
Chevrolet Impala Owner Manual - 2011
9-38
Driving and Operating
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge
and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
For all other vehicles, use only the
unleaded gasoline described under
Recommended Fuel on page 9
‑
35
.
We encourage the use of E85 in
vehicles that are designed to use it.
The ethanol in E85 is a
“
renewable
”
fuel, meaning it is made from
renewable sources such as corn
and other crops.
Many service stations will not have
an 85% ethanol fuel (E85) pump
available. The U.S. Department
of Energy has an alternative fuels
website (www.afdc.energy.gov/afdc/
locator/stations/) that can help you
find E85 fuel. Those stations that
do have E85 should have a label
indicating ethanol content. Do not
use the fuel if the ethanol content
is greater than 85%.
At a minimum, E85 should meet
ASTM Specification D 5798.
By definition, this means that
fuel labeled E85 will have an
ethanol content between 70%
and 85%. Filling the fuel tank with
fuel mixtures that do not meet
ASTM specifications can affect
driveability and could cause the
malfunction indicator lamp to
come on.
To ensure quick starts in the
wintertime, the E85 fuel must
be formulated properly for your
climate according to ASTM
specification D 5798. If you have
trouble starting on E85, it could be
because the E85 fuel is not properly
formulated for your climate. If this
happens, switching to gasoline or
adding gasoline to the fuel tank can
improve starting. For good starting
and heater efficiency below 0°C
(32°F), the fuel mix in the fuel tank
should contain no more than 70%
ethanol. 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
—
do not
add less than 11 L (3 gal) when
refueling. You should drive the
vehicle immediately after refueling
for at least 11 km (7 mi) to allow
the vehicle to adapt to the change
in ethanol concentration.
Summary of Contents for 2011 Impala
Page 6: ...Black plate 6 1 Chevrolet Impala Owner Manual 2011 vi Introduction 2 NOTES ...
Page 8: ...Black plate 2 1 Chevrolet Impala Owner Manual 2011 1 2 In Brief Instrument Panel ...
Page 30: ...Black plate 24 1 Chevrolet Impala Owner Manual 2011 1 24 In Brief 2 NOTES ...
Page 164: ...Black plate 52 1 Chevrolet Impala Owner Manual 2011 5 52 Instruments and Controls 2 NOTES ...
Page 202: ...Black plate 30 1 Chevrolet Impala Owner Manual 2011 7 30 Infotainment System 2 NOTES ...
Page 362: ...Black plate 4 1 Chevrolet Impala Owner Manual 2011 12 4 Technical Data 2 NOTES ...
Page 380: ...Black plate 18 1 Chevrolet Impala Owner Manual 2011 13 18 Customer Information 2 NOTES ...