Spark Plugs; Engine Coolant Selection - Lexus GS300 1998 Owner's Manual

CAUTION
To prevent burning yourself, do not remove the radiator cap
when the engine is hot.

Engine coolant selection

Your coolant must contain ethylene–glycol antifreeze. In
addition to preventing freezing and subsequent damage to the
engine, this will also prevent corrosion. Further supplemental
inhibitors or additives are neither needed nor recommended.
Read the antifreeze container for information on freeze
protection. Follow the manufacturer's directions for how
much to mix with water. The total capacity of the cooling
system is given on page 362. We recommend 50% solution
be used for your Lexus, or a sufficient quantity to provide
protection to about –35_C (–31_F).
NOTICE
Do not use alcohol type antifreeze or plain water alone.
62G008
Your engine is fitted with twin ground electrode spark
plugs.

SPARK PLUGS

GS400
Your engine is fitted with iridium–tipped spark plugs.
NOTICE
Use only iridium–tipped spark plugs for your engine
performance and smooth drivability.
GS300
NOTICE
Use only twin ground electrode spark plugs for your
engine performance.
ENGINE
377