Mercedes-Benz 420 SEL 1988, Owner'S Manual

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Catalytic Converter Cautions
Your MERCEDES-BENZ is equipped
with monolithic catalytic converters,
an important element in conjunction
with the 0 2-sensor to achieve sub­
stantial control of the pollutants in the
exhaust emissions. Keep your vehicle
in proper operating condition by
following our recommended mainte­
nance instructions as outlined in your
maintenance booklet.
Caution!
To prevent damage to the catalytic
converters, use only premium un­
leaded gasoline in this vehicle.
Should any noticeable irregularities in
the engine operation occur, excessive
unburned fuel may reach the convert­
er causing it to overheat.
Warning!
As with any vehicle, do not idle,
park or operate this vehicle in areas
where combustible materials such
as grass, hay or leaves can come
into contact with the hot exhaust
system, as these materials could be
ignited.
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