octane CHEVROLET CAMARO 1971 2.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine under the proper conditions, they react with other
gases to form photochemical smog, which
is so prev­
alent in Los Angeles.
In addition, carbon monoxide emissions have been
reduced by about 65 percent compared with 1960
model cars without controls. Although carbon mon­
oxide does not enter into the complex photochemical
smog reaction, it
is toxic at high concentrations and
thus, has been controlled to prevent high atmospheric
concentrations.
Recent Developments
Another important advancement in air pollution
control has been the removal of lead from gasoline.
(Certain lead compounds have been used for many
years
as additives to increase octane ratings.) All
1971 General Motors cars including your Camaro
are designed
to operate on unleaded or low-lead
(zero to
0.5 grams per gallon) gasolines. However,
any gasoline with
91 Research Octane Number or
42
higher will satisfy your engine's octane requirements.
Use of unleaded or low-lead gasoline will keep your
engine running efficiently and play an important part
in reducing exhaust emissions of hydrocarbons and
particulates.
Your Role In Controlling Air Pollution
1. Use Unleaded or Low-Lead Fuels-To obtain
maximum results
In the reduction of automotive
emissions, use an unleaded gasoline.
If such gaso­
line
is not available, you may use a leaded regu­
lar grade gasoline.
2. Have The Air Pollution Control Systems on Your
Car Serviced Regularly -
The following pages of
this section describe the emission control systems
on Chevrolet vehicles and provide information
on their proper maintenance. By following these
recommended maintenance services you will help
assure cleaner air and provide a better running,
longer lasting engine and greater all around satis­
faction, economy and performance.

Downloaded from www.Manualslib.com manuals search engine SERVICE AND MAINTENANCE
The time or mileage intervals on
the following pages are intended
as
a guide for establishing regular
maintenance and lubrication
periods for your car. Sustained
Fuel
Requirements
Your Camaro is designed to
operate efficiently on fuel of
ap­
proximately 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-
heavy duty or high speed operations
or operation under adverse condi­
tions may necessitate more frequent
servicing. To determine specific
recommendations for conditions
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
ex­
cessive knocking may result in en­
gine damage and constitutes mis­
use of the engine for which Chev­
rolet Division is not responsible
under the terms of the New Vehicle
Warranty.
NOTE: Read page 42 regarding
the importance
of using unleaded
or
low lead gasolines.
51
under which you use your car, con­
sult your Authorized Chevrolet
Dealer.
Gas Cap-The fuel tank filler cap
has a new two-step removal and
installation procedure plus a
pres­
sure-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 procedure.