Temperature in a very long period of time to maintain the owner must check the coolant level is normal, if you find that the level of the cooling fluid is below the line, should be added in time.

温度在很长一段时间内保持在零还要求业主必须检查冷却液液位是正常的，如果发现冷却液水平低于线下，应及时补充道。