Lexus GX 460 2020 Owner's Manual page 596

Cooling system
Capacity
(Reference)
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.
Electrical system (battery)
Specific gravity reading at
20C (68F):
Charging rates
GX460_OM_OM60R28E_(GE)
With rear
15.4L (16.3 qt., 13.6 Imp.qt.)
heater
Without rear
13.7L (14.5 qt., 12.1 Imp.qt.)
heater
Use either of the following:
• "Toyota Super Long Life Coolant"
• A 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 SK20HR11
1.1 mm (0.043 in.)
1.25 or higher
In the case the gravity is less than standard, charge
battery.
Quick charge 15 A max.
Slow charge 5 A max.
595
8-1. Specifications
8