Toyota HILUX Owner's Manual page 368

Engine coolant
The coolant level is satisfactory if it is between the upper and lower
lines on the reservoir when the engine is cold.
1 Reservoir cap
Upper line
2
3 Lower line
1GR-FE engine
1KD-FTV engine
If the level is on or below the lower line, add coolant up to the upper line.
(→P. 452)
6-3. Do-it-yourself maintenance
2TR-FE engine
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