Toyota Hilux Owner's Manual page 507

Ignition system (gasoline engine)
Spark plug
Make
Gap
NOTICE
■
Iridium-tipped spark plugs (2TR-FE engine)
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
Quick charge
Slow charge
1GR-FE engine
DENSO K20HR-U11
NGK LFR6C11
2TR-FE engine
DENSO FK20HR-A8
1GR-FE engine
1.1 mm (0.043 in.)
2TR-FE engine
0.8 mm (0.031 in.)
1.250  1.290 Fully charged
1.160  1.200 Half charged
1.060  1.100 Discharged
15 A max.
5 A max.
9-1. Specifications
505
9