Filter
Top Products
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.
In Canada, some gasolines contain an octane enhancing
additive called MMT. If such fuels are used, your
emission control system performance may be affected.
The malfunction indicator lamp on your instrument
panel may also turn on.
If
this occurs, return
to
your
authorized Buick dealer for service.
6-3