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You can be injured and your vehicle could be
damaged if you try to do service work on a
vehicle without ,knowing enough about it.
0
Be sure you have sufficient knowledge,
experience, and the proper replacement
parts and tools before you attempt any
vehicle maintenance task.
Be sure to use the proper nuts, bolts and
;
other fasteners. "English". and 6Cmetric"
fasteners can be easily confused. If you use
the wrong fasteners, parts can later break
or fall off. You could be hurt.
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Fuel
Use regular unleaded gasoline rated at 87 octane or
gher. 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
weloped 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
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 i n 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 qn
your instrument panel may t u r n on and/or your vehicle
may fail asmog-check test. If this occurs, return to
your authorized Chevrolet/Geo 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.
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