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decrease knocking may contain metal addi-
tives that damage the engine and catalytic
converter. This type of products must not be
used.
●
Do not use fuels shown in the pump as con-
taining metals. LRP (lead replacement petrol)
fuels contain high concentrations of metal
additives. Risk of engine damage!
●
High engine speed and full throttle can
damage the engine when using petrol with
an octane rating lower than the correct grade
for the engine.
Note
● Fuel with an octane rating higher than the
one required by the engine can be used.
● In countries in which there is no sulphur-
free fuel, it is also allowed to use low sulphur
content fuel.
300
Fuel and exhaust gas cleaning
Engine management and
emissions control system
Introduction
WARNING
Due to the high temperatures reached by the
exhaust gas scrubbing system, you should
not park your vehicle near a surface that can
catch fire easily. Fire hazard!
WARNING
Do not apply wax underneath the vehicle
around the area of the exhaust system: Fire
hazard!
Catalytic converter
To maintain the useful life of the catalytic
converter
●
Only use unleaded petrol with petrol en-
gines.
●
Never run the fuel tank dry.
●
When changing or adding engine oil, do not
›››
exceed the necessary amount
Checking and topping up the engine oil
level.
●
Never tow the vehicle to start it, use jump
›››
leads if necessary
page 305.
If you should notice misfiring, uneven running
or loss of power when the car is moving, have
the vehicle inspected by a specialised work-
shop. In general, the emissions warning lamp
will light up when any of these symptoms
occur. If this happens, any unburnt fuel can
enter the exhaust system and escape into the
atmosphere. The catalytic converter can also
be damaged by overheating.
NOTICE
Never run the fuel tank completely dry be-
cause an irregular fuel supply can cause igni-
tion faults. This allows unburnt fuel to enter
the exhaust system, which could cause over-
heating and damage the catalytic converter.
For the sake of the environment
Even when the emission control system is
working perfectly, there may be a smell of
sulphur from the gases on occasions. This
depends on the sulphur content of the fuel
used. This can quite often be avoided by
changing to another brand of fuel.
page 326,
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