This issue has been on the back of my mind for awhile so I thought I'd bring it up. Last summer I had to add coolant to the res. and the radiator. But by doing so, it did take care of the gurgling noise. I never had a problem with heat or with the car overheating just the gurgling noise. Well, now I see there is just a tiny bit left in the resevoir. Where is it going? I was told that it could be evaporating and I havent seen any drips in the snow. I had a civic and an accord and never had to add collant to either over a 3 year time period. Any thoughts?