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-Do not alter or remove any component of
the Emission Contro l System unless ap
proved by the manufacturer.
- Do not alter or remove any device, such
as heat shields, switches, ignition wires,
valves, wh ich are designed to protect
your vehicle's Emission Control System and other important veh icle compo
nents.
Fewer short trips
Fuel consumption will always be relatively
high on short trips .
~ Try to avoid driving short distances with a
cold eng ine.
The engine and catalytic converter have to
reach their optimal
operating temperature to
reduce fuel consumption and noxious emis
sions effectively.
Just after starting, a cold engine in a mid -size
car only achieves a fuel economy of 6-8 miles
per gallon (30-40 l/100 km). After about a
half a mile, fuel economy climbs to 12 mpg
(20 l/100 km). After about
2 .5 m iles (4 km),
the engine is at its proper operating tempera
ture and fue l economy has reached a normal
l eve l. So you can see that you should avoid
short trips wheneve r possible.
The
outside temperature is also critical in this
regard . Your car consumes more fuel in the
winter than in the summer.
Driving and the environment 201
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