Can Water Be Added to Engine Coolant?
2 Answers
Engine coolant should not be mixed with water. Coolant, also known as antifreeze, prevents the coolant from freezing during cold seasons when the vehicle is parked, which could otherwise crack the radiator or damage the engine cylinder block. Precautions for using automotive engine coolant include: 1. Do not mix different types of antifreeze; 2. Do not open the radiator cap or drain valve immediately after driving; 3. When replacing the coolant, ensure all old antifreeze is completely removed and the radiator is thoroughly cleaned. The steps for replacing automotive engine coolant are: 1. Unscrew the radiator cap, open the radiator drain valve, and drain the antifreeze; 2. Flush the engine cooling system; 3. Add new antifreeze when the engine is cool, filling it up to the higher mark on the radiator.
I've been driving for decades and often encounter situations where the coolant is insufficient. You can add water, but only in emergencies, such as when the low coolant level warning comes on while driving on the highway. The cooling system primarily relies on a mixture of antifreeze and water to function. Using only water can cause the engine to overheat and rust. Adding water in the short term is acceptable, but it's essential to use distilled or purified water, as tap water contains minerals that can clog pipes and corrode metal. Long-term use of pure water can accelerate the aging of the water pump and radiator. It's recommended to use a 50% antifreeze and 50% distilled water mixture for regular use, which prevents freezing, rust, and saves money. Once you've added water, visit a repair shop as soon as possible to check and replace the coolant to avoid damaging the engine.
