Can You Pour Water on an Overheated Engine?

[DeTessa]

You should not pour water on an overheated engine. The engine block and exhaust pipes are extremely hot, and using water to cool them down can shorten the engine's lifespan and even cause engine seizure. Consequences of a shortened engine lifespan: A shortened engine lifespan leads to reduced structural rigidity and increased brittleness, resulting in decreased engine performance. Consequences of engine seizure: If the engine deforms due to uneven contraction from temperature differences, it may require a major overhaul. Solution: After driving for a while, pull over and let the engine cool naturally for about 10 minutes. During this time, you can pour some water on the radiator, but do not attempt to open the radiator cap. The system is pressurized and extremely hot—opening it can cause rapid vaporization and splashing of water, which may scald your hands or face.