I've noticed that when its warm outside, my temperature gauge is usually between the N and the R in NORM. When I have the AC on, it stays closer to the R. When it gets cooler out, the needle usually stays below the N. If I turn the heater on, then the needle stays very low. Sometimes its barely above the blue mark. Is this normal? The themostat was new at the beginning of the summer and and its an OE replacement. Its not a cooler stat. The coolant level is also good.