Filling The Tank - Chevrolet Silverado 2015 Owner's Manual

9-70 Driving and Operating
E85 or FlexFuel should meet ASTM
Specification D 5798 or CAN/
CGSB 3.512 in Canada. Do not use
the fuel if the ethanol content is
greater than 85%. Fuel mixtures that
do not meet ASTM or CGSB
specifications can affect driveability
and could cause the malfunction
indicator lamp to come on.
For the 6.0L V8 engine, after
refueling, the vehicle calculates the
composition of the fuel. It is not
recommended to repeatedly switch
between fuels. If fuels are switched
frequently, add as much fuel as
possible and do not add less than
11 L (3 gal) when refueling. Drive at
least 11 km (7 mi) immediately after
refueling to allow the vehicle to
adapt to the change in ethanol
concentration.
Because E85 or FlexFuel has less
energy per liter (gallon) than
gasoline, the vehicle will need to be
refilled more often. See Filling the
Tank on page 9-70.
Caution
Some additives are not
compatible with E85 or FlexFuel
and can harm the vehicle's fuel
system. Do not add anything to
E85 or FlexFuel. Damage caused
by additives would not be covered
by the vehicle warranty.
Caution
Do not use fuel containing
methanol. It can corrode metal
parts in the fuel system and also
damage plastic and rubber parts.
That damage would not be
covered under the vehicle
warranty.

Filling the Tank

If the vehicle has a diesel engine,
see the Duramax diesel supplement
for more information.
Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.
To help avoid injuries to you
and others, read and follow
all the instructions on the fuel
pump island.
Turn off the engine when
refueling.
Keep sparks, flames, and
smoking materials away
from fuel.
Do not leave the fuel pump
unattended.
Do not reenter the vehicle
while pumping fuel.
Keep children away from the
fuel pump and never let
children pump fuel.
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