Hey, i keep topping off the radiator reservoir with coolant but no matter how many times i do, it'll go from MAX to MIN in the matter of a day. Could this be a leak? if so why would it stay at min and not leak more from there? Also, could someone recommend a good radiator hose clamp tool to remove the hose clamp. I tried using a needle nose plier but there no good. These Smart cars use a different kind of clamp, one that ive never seen before and one that i cant find on the net. any ideas would be helpful. Thank you and happy smart driving!