hi the car drinks the water randomly and also randomly throws the water out. when it drinks the water the coolant bottle goes emty and the rad water goes low so i fill it up so tghe rad is almost full and the coolant bottle is a little under half. now sometimes it simply drinks it again if driving slowly for a short distance but when driving in high reves in throws it out nd when the bottle is almost full the car starts to over heat after an hour or so of driving. there is no sign of water leak but you can always smell coolant from inside the car when driving even when heaters are off.