Background Information - Chevrolet Impala 1969 Owner's Manual

ON THE FOLLOWING THREE PAGES
important
information
about air
pollution
control
systems
facts you should know:
BACKGROUND INFORMATION:
During the combustion
process in an automotive engine, certain ' hydrocarbons in
the fuel fail to burn completely and are discharged into the
engine crankcase or exhaust system. Some carbon mon-
oxide is also formed during the combustion process. This
is also discharged into the exhaust system. On a per·car
basis, concentrations of these combustion products are
insignificant. Multiplied by millions of vehicles, however,
crankcase and exhaust emissions combine with pollution
products from other sources to contribute to the total air
pollution problem.
General Motors has, since the late 1940's, been a leader
in research and development work related to vehicle
emissions, and control systems have been developed
which are highly effective in reducing undesirable crank·
case and exhaust emissions. This work continues at an
accelerated pace.
All new 1969 Chevrolet passenger cars and light duty
trucks comply with all Federal and State laws and regula·
tions for the Control of Air Pollution from New Motor
Vehicles and New Motor Vehicle Engines.
YOUR ROLE IN CONTROLLING AIR POLLUTION: It is
very important that the engine in your Chevrolet vehicle
be serviced regularly in order to maintain its efficiency
and minimize emissions in normal driving.
The following pages describe the crankcase and exhaust
emission control systems on Chevrolet vehicles, and pro-
vide information on their proper maintenance. By following
these recommended maintenance services you will help
assure cleaner air and
will
provide a better running, longer
lasting engine for greater all-around satisfaction, economy
and performance.