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.
Be sure you have sufficient knowledge,
experience, and the proper replacement
parts and tools before you attempt any
vehicle maintenance task.
0
Be sure to use the proper nuts, bolts and
other fasteners. “English’ and “metric”
fasteners can be easily confused. If you use
the wrong fasteners, parts can later break
or
fall
off.
You
could be hurt.
Fuel
Use premium unleaded gasoline rated at 91 octane or
higher. At a minimum, it should meet specifications
ASTM
D4,814
in the United States and
CGSB
3.5-M93
in
Canada. Improved gasoline specifications have been
i
~
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 for premium is at least 91. If
the octane is less than 91, you may get a heavy knocking
2
noise when you drive.
(In
an emergency, you may be
able to use
a
lower octane
--
as low as
87
--
if
heavy
knocking does not occur.)
If
you’re using 91 or higher
octane unleaded gasoline and you still hear heavy
knocking, your engine needs service.
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 inbcator 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 Cadillac 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.
6-2
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