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 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.
Some gasolines that are not reformulated for low
emissions contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT);
ask your service station operator whether or not
his
fuel
contains MMT. General Motors does not recommend the
use of such gasolines.
If
fuels containing MMT are used,
spark plug life may be reduced and your emission
control system performance may be affected. The
malfunction indicator lamp on your instrument panel
may turn on.
If
this occurs, return to your authorized
Buick dealer for service.