Lexus GS430 User Manual page 546

ENGINE
– COOLING SYSTEM
Capacity
Coolant type
NOTE:
"Toyota Super Long Life Coolant" is used in your Lexus vehicle at factory fill. In order to avoid technical problems, only use "Toyota
Super Long Life Coolant" or similar high quality ethylene glycol based non−silicate, non−amine, non−nitrite, and non−borate coolant
with long−life hybrid organic acid technology. (Coolant with long−life hybrid organic acid technology is a combination of low
phosphates and organic acids.) Do not use plain water alone. Please contact your Lexus dealer for further details.
– IGNITION SYSTEM
Spark plug – Make
– Gap
– ELECTRICAL SYSTEM
Battery – Open voltage at 20_C (68_F):
– Charging rates
522
10.1 L (10.7 qt., 8.9 lmp.qt.)
"Toyota Super Long Life Coolant" or similar high quality ethylene glycol
based non−silicate, non−amine, non−nitrite, and non−borate coolant
with long−life hybrid organic acid technology (Coolant with long−life
hybrid organic acid technology is a combination of low phosphates and
organic acids.)
Do not use plain water alone.
DENSO SK20R11
NGK IFR6A11
1.1 mm (0.043 in.)
12.7V
12.3V
11.9V
[Voltage that is checked 20 minutes after the engine switch is off with all
the lights turned off]
5A max.
Fully charged
Half charged
Discharged