It is not that cold here, maybe 30 degrees or so, but I notice that the car coolant never gets up to temperature. I can get up 1/3 into the "normal range" on the dash panel gage, but then the ICE shuts off and the temperature drops out of the operating range, almost off the gage. I don't have the nice grill covers, but did block the lower 2 openings with pipe insulation. I am wondering if my thermostat stays open after the car warms up, and the engine just is not producing enough heat to support the heater plus the radiator loss, even with a grill block. Is this unusual? It seems that winter driving is a bit under engineered in this car.