S-Type (X200) V8-4.2L (2005)
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Thermostat: Specifications
Thermostat
The thermostat is located in the thermostat housing and allows rapid engine warm-up by restricting coolant flow through the radiator below 82°C (180
°F). The thermostat also assists in keeping the engine operating temperature within predetermined limits. On the 4.2L supercharged engine the
thermostat begins to open at 84°C (183°F) and is fully open at 98°C (208°F), on the 4.2L and 2.5 or 3.0L engine the thermostat begins to open at 88°
C - 92°C (190°F - 198°F) and is fully open at 102°C (216°F).
