Ok, So, thursday afternoon my car over heated coming back from school. I had been keeping my eye on the temp gauge since we have been having 100+ degree weathers here in So Cal. So, while on my way home, my temp gauge didnt even gradually rise, it just jumped to a little over normal tempature, which makes me question if the car was a little hot before hand, however , that isnt my problem anymore, cause i do plan on ordering a new temp and oil gauge just to have a more accurate reading since my car is getting up there in milage. SO, my problem is, i flushed out my fluid, the car was a little warm when i did it, so, by the end of the night, i ended up topping it off, and now tonight, my rediator reservoir was low again. Like really low. Im getting worried about this because im fearing the worst, which is a head gasket leak, but tonight, when i checked my oil, everything seemed fine, i didnt spot water in it. and i havent noticed any leaks in my radiator whats so ever. Someone told me i might have a hot leak, but i dont think that either. So, my question is, where the hell is it going??? is it possible its evaporating while im at school and driving with these heat conditions???