Hey guys I frequent tf but this is my first post about a car. I have some questions regarding my 05 Chevy cobalt its 4 cyl. not supercharged. Rolled 100000 miles the other day and seemed to be running okay. My wife started it this morning and I looked out the window and it kind of looked like it was smoking a little, never noticed that before. Also I was sitting in the drive way earlier and it seemed to be running around 218 degrees, never noticed that either... Now for the great news I have never tuned up the car... I am sure its time to. But I need to know if that temp is acceptable in this car. I am a mechanic, but I work on boats 2 and 4 stroke engines. I definitely cannot afford to take this care to a Chevy dealer to get raped... But I think if someone steers me in the right direction I will be okay doing it myself. Any help would be nice. Thanks.