Lexus 2013 IS250 Owner's Manual page 557

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.
IS250_EE(OM53B11E)
10.5 L (11.1 qt., 9.2 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
1.1 mm (0.043 in.)
9-1. Specifications
541
9