Subaru 2005 Impreza Owner's Manual page 312

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Non-turbo models
The catalytic converter is installed in the exhaust sys-
tem. It serves as catalyst to reduce HC, CO and NOx
in exhaust gases, thus providing cleaner exhaust.
To avoid damage to the catalytic converter:
Use only unleaded fuel. Even a small amount of
leaded fuel will damage the catalytic converter.
Never start the engine by pushing or pulling the ve-
hicle.
Avoid racing the engine.
Never turn off the ignition switch while the vehicle is
moving.
Keep your engine tuned-up. If you feel the engine
running rough (misfiring, backfiring or incomplete
combustion), have your vehicle checked and repaired
by an authorized SUBARU dealer.
Do not apply undercoating or rust prevention treat-
ment to the heat shield of catalytic converter and the
exhaust system.
Avoid fire hazards. Do not drive or park the
vehicle anywhere near flammable materials
(e.g. grass, paper, rags or leaves), because the
catalytic converter operates at very high tem-
HS8002BA
peratures.
Keep everyone and flammable materials
away from the exhaust pipe while the engine is
running. The exhaust gas is very hot.
Driving tips
– CONTINUED –
8-5

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