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SERVICE AND MAINTENANCE
The time or mileage
,intervals
on the following pages are in-
tended as a guide for establishing
regular maintenance and lubrica-
tion periods for your car. Sus-
Fuel
Requ i rements
Your Monte Carlo is designed
to operate efficiently on fuel of
approximately 91 Research Octane
Number or higher, commonly sold
in the United States and Canada.
Use of a fuel which is too low in
anti-knock quality will result in
"spark
knock" and/or "after-run".
Since the
anti-knock
quality of all
gasoline is not the same and factors
such as altitude, terrain,
and
air
temperature affect operating effi-
tained heavy duty or high speed
operations
or operation
under
adverse conditions may necessi-
tate more frequent
servicing.
To
ciency, knocking
and/
or after-run
may result even though you are
using the fuel recommended.
If
these conditions persist consult
your authorized Chevrolet Dealer.
In any case,
continuous or
excessive knocking may result in
engine damage and
constitutes
misuse of the engine for which
Chevrolet Division is not respon-
sible under the terms of the New
Vehicle Warranty.
NOTE: Read page 46 regarding
the
importance
of using unleaded
or low lead gasolines.
56
determine
specific
recommenda-
tions for
conditions
under whieh
you use
your
car, consult your
Authorized Chevrolet Dealer.
Gas Cap-The
fuel tank filler cap
has a new two-step removal and
installation procedure plus a
pressure-vacuum
safety
relief
valve. It is
equipped with a
double
set
of locking tangs. To remove:
• Rotate cap one-half turn coun-
terclockwise to clear the
first
set
of tangs from the slots
inside
the filler neck. This will allow
any
residual pressure to escape.
• Pull the cap outward and rotate
one-quarter turn counterclock-
wise to clear second set of tangs
and
remove the cap.
• To install, reverse this pro-
cedure.
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