Lexus GS300 1998 Owner's Manual page 267

STARTING AND DRIVING
NOTICE
A large amount of unburned gases flowing into the
three–way catalytic converter may cause it to overheat
and create a fire hazard. To prevent this and other
damage, observe the following precautions:
D Use only unleaded gasoline.
D Do not drive with an extremely low fuel level; running
out of fuel could cause the engine to misfire, creating
an excessive load on the three–way catalytic converter.
D Do not allow the engine to run at idle speed for more
than 20 minutes.
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D Avoid racing the engine.
D Do not push–start or pull–start your vehicle.
D Do not turn off the ignition while the vehicle is moving.
D Keep
your engine in good
Malfunctions in the engine electrical system,
electronic ignition system or fuel system could cause
an extremely high three–way catalytic converter
temperature.
D If the engine becomes difficult to start or stalls
frequently, take your vehicle in for a check–up as soon
as possible. Remember, your Lexus dealer knows your
vehicle and its three–way catalytic converter system
best.
D To ensure that the three–way catalytic converter and
the entire emission control system operate properly,
your vehicle must receive the periodic inspections
required by the Lexus Maintenance Schedule. For
scheduled maintenance information, refer to the
separate "Owner's Manual
Maintenance Schedule".
running order.
Supplement/