Lexus GS430 - Page 522

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6-1. Specifications
Cooling system
Ignition system
GS430 GS350
Capacity
10.7 qt. 
(10.1 L, 8.9 lmp.qt.)
9.6 qt. 
(9.1 L, 8.0 lmp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-
cate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
GS430 GS350
Spark plug
Make DENSO
NGK
SK20R11
IFR6A11
FK20HBR11
ILFR6D11T
Gap 0.043 in. (1.1 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.