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Originally Posted by Zulu95
Not with today's "Idiot Gauges" that BMW use. The needle sits a the mid point through a range of readings from cooler to hot. You cannot rely on the gauge to warn you if your engine is too cold or hot.
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True. You also have to realize the temp gauge measures the temperature of the coolant and not the engine or its oil. Most temp gauges are inaccurate but I don't think it should be ignored. If the temp gauge is moving slow or staying dead cold, it's possible that the spring on the thermostat is malfunctioning hence giving the cold air.