Last weekend I go to start my car and get a "STOP," "low coolant!" message on my display. I stop the car and pop the hood to find the coolant level 2 inches below the low line. It was Saturday afternoon, so I drove to my nearest dealership to have it topped off and schedule an appt. Well, I got it pressure tested for leaks yesterday, and resulted in no leaks from the pressure test. There has been no visible coolant drips, leaks, spills, or puddles on the ground wherever I go. Plus I park in a garage, so I would notice. The dealership said that slight coolant loss is normal wear and tear. Anyone else lose coolant slightly with time? Is this truly normal? I have a little over 15,000 miles on her btw.