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 Buick dealer before adding equipment to the
outside of your vehicle.
Fuel
Use regular unleaded gasoline rated at
87
octane or
higher. At
a
minimum, it should meet specifications
ASTM
D4814
in the United States and CGSB
3.5-M93
in Canada. Improved gasoline specifications have been
developed by the American Automobile Manufacturers
Association (AAMA) for better vehicle performance
and engine protection. Gasolines meeting
the
AAMA
specification could provide improved driveability and
emission control system protection compared to
other gasolines.
Be sure the posted octane is at least
87.
If the octane is
less than
87,
you may get a heavy knocking noise when
you drive.
If
it’s bad enough, it can damage your engine.
If you’re using fuel rated at
87
octane
or
higher and you
still hear heavy knocking, your engine needs service.
But don’t worry if you hear a little pinging noise when
you’re accelerating or driving up a
hill.
That’s normal,
and you don’t have to buy a higher octane fuel to get rid
of pinging. It’s the heavy, constant knock that means
you have a problem.
If your vehicle is certified to meet California Emission
Standards (indicated on the underhood tune-up label), it
is
designed to operate on fuels that meet California
specifications. If such fuels are not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp on
your instrument panel may turn on and/or your vehicle
may fail
a
smog-check test. If this occurs, return to your
authorized Buick dealer for diagnosis
to
determine the
cause of failure.
In
the event it is determined that the
cause of the condition is the type of fuels used, repairs
may not be covered by your warranty.
6-3
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