Thermostat, Engine Cooling

Thermostat Opening Temperature

Thermostat fully open (2.5L) 106°C (223°F)
Thermostat fully open (3.0L 4V) 98.9°C (210°F)

Thermostat starts to open (2.5L) 90°C (194°F)
Thermostat starts to open (3.0L 4V) 84°c-88°C (183°F-190°F)