Adding Equipment To The Outside Of; Your Vehicle; Fuel; Gasoline Octane - Pontiac 2005 Montana Owner's Manual

Adding Equipment to the Outside of

Your Vehicle

Things you might add to the outside of your vehicle
can affect the airflow around it. This may cause
wind noise and affect windshield washer performance.
Check with your dealer before adding equipment to
the outside of your vehicle.

Fuel

Use of the recommended fuel is an important part of the
proper maintenance of your vehicle.

Gasoline Octane

Use regular unleaded gasoline with a posted octane
of 87 or higher. If the octane is less than 87, you
may get a heavy knocking noise when you drive. If this
occurs, use a gasoline rated at 87 octane or higher
as soon as possible. Otherwise, you might damage
your engine. A little pinging noise when you accelerate
or drive uphill is considered normal. This does not
indicate a problem exists or that a higher-octane fuel
is necessary. If you are using 87 octane or
higher-octane fuel and hear heavy knocking, your
engine needs service.
Gasoline Specifications
It is recommended that gasoline meet
specifications which were developed by automobile
manufacturers around the world and contained in the
World-Wide Fuel Charter which is available from
the Alliance of Automobile Manufacturers at
www.autoalliance.org/fuel_charter.htm. Gasoline
meeting these specifications could provide improved
driveability and emission control system performance
compared to other gasoline.
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