Its been months since I checked my coolant level. However, since I am taking a trip tomorow and then in Feb driving from MD to CA I figured I would check it this morning. Its about 32 degrees out and I literally only drove about 1 mile and then checked it. I am at the MIN level. Is it possible that I have a leak? I haven't noticed any typical coolan smells or puddles under my vehicle. Can that crap just evaporate or does it expand in the summer and contract in the winter and therefore I need to just add more??? Thanks.

 

I think it does evaporate over time. Mine's getting a little low in the reserve tank too.

 

Its fine for it to be at the min level. At times it will fill up too. That's why if u fill it up too much there is a opening that will release some if it gets overfilled.