2009 PONTIAC G8 fuel type

Gasoline Octane
If the vehicle has a V8 engine, use
regular unleaded gasoline with a
posted octane rating of 87 or higher.
If the octane rating is less than 87,
you might notice an audible knocking
noise when you drive, commonly
referred to as spark knock. If this
occurs, use a gasoline rated at 87
octane or higher as soon as possible.
If you are using gasoline rated at 87
octane or higher and you hear heavy
knocking, the engine needs service.
If the vehicle has the 3.6L V6 engine
(VIN Code 7), use regular unleaded
gasoline with a posted octane rating
of 87 or higher. For best performance
or trailer towing, you could choose
to use middle grade 89 octane
unleaded gasoline. If the octane
rating is less than 87, you might
notice an audible knocking noise
when you drive, commonly referredto as spark knock. If this occurs,
use a gasoline rated at 87 octane
or higher as soon as possible. If you
are using gasoline rated at
87 octane or higher and you hear
heavy knocking, the engine needs
service.
Gasoline Specications
At a minimum, gasoline should
meet ASTM specication D 4814
in the United States or
CAN/CGSB-3.5 or 3.511 in Canada.
Some gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. SeeAdditives on
page 8-36for additional information.
California Fuel
If the vehicle is certied to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specications. See
the underhood emission control
label. If this fuel is not available in
states adopting California emissions
standards, the vehicle will operate
satisfactorily on fuels meeting federal
specications, but emission control
system performance might be
affected. The malfunction indicator
lamp could turn on and the vehicle
might fail a smog-check test. See
Malfunction Indicator Lamp on
page 4-18. If this occurs, return to
your authorized dealer/retailer for
diagnosis. If it is determined that the
condition is caused by the type of
fuel used, repairs might not be
covered by the vehicle warranty.
Driving and Operating 8-35

The diagnostic system can
determine if the fuel cap has been
left off or improperly installed.
This would allow fuel to evaporate
into the atmosphere. See
Malfunction Indicator Lamp on
page 4-18.
{CAUTION
If a re starts while you are
refueling, do not remove the
nozzle. Shut off the ow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.
Notice:If you need a new fuel
cap, be sure to get the right type.
Your dealer/retailer can get one for
you. If you get the wrong type, it
may not t properly. This may
cause the malfunction indicator
lamp to light and may damage the
fuel tank and emissions system.
SeeMalfunction Indicator Lamp
on page 4-18.
Filling a Portable Fuel
Container
{CAUTION
Never ll a portable fuel container
while it is in the vehicle. Static
electricity discharge from the
container can ignite the fuel
vapor. You can be badly burned
and the vehicle damaged if this
occurs. To help avoid injury to
you and others:
Dispense fuel only into
approved containers.
Do not ll a container while it
is inside a vehicle, in a
vehicle’s trunk, pickup bed, or
on any surface other than the
ground.
(Continued)
CAUTION (Continued)
Bring the ll nozzle in contact
with the inside of the ll
opening before operating the
nozzle. Contact should be
maintained until the lling is
complete.
Do not smoke while
pumping fuel.
Do not use a cellular phone
while pumping fuel.
8-38 Driving and Operating

Vehicle Data
Recording and
Privacy
Your GM vehicle has a number of
sophisticated computers that record
information about the vehicle’s
performance and how it is driven.
For example, your vehicle uses
computer modules to monitor and
control engine and transmission
performance, to monitor the
conditions for airbag deployment and
deploy airbags in a crash and, if so
equipped, to provide antilock braking
to help the driver control the vehicle.
These modules may store data to
help your dealer/retailer technician
service your vehicle. Some modules
may also store data about how you
operate the vehicle, such as rate of
fuel consumption or average speed.
These modules may also retain the
owner’s personal preferences, such
as radio pre-sets, seat positions, and
temperature settings.
Event Data Recorders
This vehicle has an Event Data
Recorder (EDR). The main purpose
of an EDR is to record, in certain
crash or near crash-like situations,
such as an airbag deployment or
hitting a road obstacle, data that
will assist in understanding how a
vehicle’s systems performed.
The EDR is designed to record data
related to vehicle dynamics and
safety systems for a short period of
time, typically 30 seconds or less.
The EDR in this vehicle is designed
to record such data as:
How various systems in your
vehicle were operating
Whether or not the driver and
passenger safety belts were
buckled/fastened
How far, if at all, the driver was
pressing the accelerator and/or
brake pedal
How fast the vehicle was travelingThis data can help provide a better
understanding of the circumstances
in which crashes and injuries occur.
Important:EDR data is recorded
by your vehicle only if a non-trivial
crash situation occurs; no data
is recorded by the EDR under
normal driving conditions and no
personal data (e.g., name, gender,
age, and crash location) is
recorded. However, other parties,
such as law enforcement, could
combine the EDR data with the type
of personally identifying data
routinely acquired during a crash
investigation.
To read data recorded by an EDR,
special equipment is required,
and access to the vehicle or the
EDR is needed. In addition to
the vehicle manufacturer, other
parties, such as law enforcement,
that have the special equipment, can
read the information if they have
access to the vehicle or the EDR.
12-16 Customer Information