Why does the radiator keep losing water even though it's not leaking?

[VanKaylee]

The main reasons for a radiator not leaking but constantly losing water include cracks in the water passages, excessively high engine temperature, and coolant leakage. Details are as follows: Cracks in the water passages: Cracks in the engine's internal water passages can cause coolant to enter the cylinders and burn. If the engine is burning coolant, white smoke will come out of the exhaust pipe. Many cars emit white smoke from the exhaust pipe in winter, which is a normal phenomenon. However, if white smoke appears during warmer seasons, it indicates severe coolant burning. Excessively high engine temperature: When the engine operates at excessively high temperatures, it can cause the coolant to evaporate into steam. Coolant leakage: There may be a coolant leak, but the leakage point is very concealed, so the owner hasn't noticed it.