My tempature gauge inside the car has been leaning toward the cold end. It use to stay in the middle after driving, now it doesnt get higher than like 1/4. And I know its cold out but i did drive it about 35 minutes on the highway to a dentist and then back and it still didnt get to the middle. I think it is unusual, but i do have heat. And radiator/coolent levels are good. Runs great, just it has caught my eye the last week or 2.