Engine Exhaust Cautions; Facts About Engine Oil Consumption - Toyota PRIUS 2007 Important Information Manual

Engine exhaust cautions

CAUTION
Avoid inhaling the engine exhaust.
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It contains carbon monoxide, which
is a colorless and odorless gas. It
can cause unconsciousness or even
death.
Make sure the exhaust system has
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no holes or loose connections. The
system should be checked
time to time. If you hit something,
or notice a change in the sound of
the exhaust, have the
checked immediately.
Do not run the hybrid system in a
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garage or enclosed area except for
the time needed to drive the vehicle
in or out. The exhaust gases cannot
escape, making this a particularly
dangerous situation.
Do not remain for a long time in a
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parked vehicle with the hybrid sys-
tem running. If it is unavoidable,
however, do so only in an uncon-
fined area and adjust the heating or
cooling system to force outside air
into the vehicle.
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Keep the back door closed while
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driving. An open or unsealed back
door may cause exhaust gases to
be drawn into the vehicle.
To allow proper operation of your
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vehicle's ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.
from
If you smell exhaust fumes in the
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vehicle, open
close the back
system
plenty of fresh air enters the ve-
hicle. If you can
fumes even though there are no
other vehicles in the surrounding
area, have your vehicle checked by
your Toyota dealer. Continued in-
halation of exhaust fumes can lead
to death by gas poisoning.
Facts about engine oil
consumption
FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of
lubricating and cooling the inside of the
engine, and plays a major role in main-
taining the engine in proper working order.
ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are as
follows.
the windows and
Oil is used to lubricate pistons, piston
door to ensure
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rings and cylinders. A thin film of oil
is left on the cylinder wall when a
smell exhaust
piston moves downwards in the cylin-
der. High negative pressure generated
when the vehicle is decelerating sucks
some of this oil into the combustion
chamber. This oil as well as some part
of the oil film left on the cylinder wall
is burned by the high temperature com-
bustion gases during the combustion
process.