Cooling System Data; Ignition System Data - Lexus GS350 Owner's Manual

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8-1. Specifications
Cooling system
Capacity
Coolant type
Ignition system
Spark plug
Make
Gap
NOTICE
Iridium-tipped spark plugs
■
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
GS350_OM_OM30D41U_(U)
10.3 qt. (9.7 L, 8.5 Imp.qt.)
Use either of the following:
• "Toyota Super Long Life Coolant"
• Similar high-quality ethylene glycol-based non-silicate,
non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
DENSO FK20HBR11
0.043 in. (1.1 mm)