Originally Posted by reako

Thanks for your input. I would like to point out a few inaccuracies in your reply just to clarify things a bit. First of all I purchased all season tires, so your first point doesn't apply to my situation. Second, I am not using the rear defroster or AC (I disabled the AC from automatically engaging on defrost mode as well). Last, I have not driven through any snow. I agree that initially a cold engine is not working very efficiently, but the engine warms up quickly and stays that way for my long commute each day, one could make the argument that the engine actually runs more efficiently in overall cool weather, right?