My car decided to overheat yesterday. It was noticed while we were waiting to pick someone up from the airport. We shut the car off until they arrived. (15 minutes or so) We then drove home with the heat gauge not getting hot.
When we got home I let the car cool. I then added a small amount of coolant (size of a yogurt container) just to top it off. i also added a bit to the reservoir to bring it above the "low" mark.
I guess my question(s) would be:
Should I be concerned about it happening again or was the little bit of fluid I added enough to make a difference? Does the fact that the car doesn't overheat while drive mean the thermostat is not the issue? If none of the above, what would be the most likely issue that would cause this?