[LiquidRS]

As this is the first winter with my car, I've observed a rather odd coolant temp gauge behaviour. Its now sub 25 degrees C here and when driving the car with lots of airflow on the highway the temp gauge moves from its 1 min to 11 position to maybe 3 minutes to 11. If I increase the pace somewhat it settles at its usual 1 minute to 11 position. Given that this is a dumb gauge Im surprised at how sensitive it is.


Is this normal behaviour or do I have a thermostat that's stuck open? No warning lights etc and it reaches 90 degrees C within 5-10 min of gentle driving. Pics below. First pic is the drop in temp cruising on the highway after its reached usual operating temperature. i'm not too concerned but I just want to understand the cooling protocol for the LT4.