What are the consequences of adding windshield washer fluid to the coolant reservoir?

[LeAlana]

The coolant used in the radiator has two main functions: cooling the engine and preventing freezing. Accidentally adding windshield washer fluid can cause a chemical reaction in the coolant, lowering its freezing point and boiling point. A reduced freezing point may cause the coolant to freeze, and since liquids expand when they turn into solids, this can lead to engine block cracking, necessitating a major engine overhaul. Functions of coolant: Coolant is a special additive-containing liquid primarily used in liquid-cooled engine cooling systems. It provides excellent performance in preventing freezing in winter, boiling in summer, and resisting scale and corrosion year-round. Can different coolants be mixed? It is essential to use the same brand of coolant. Different brands may have varying formulations, and mixing them can lead to chemical reactions between additives, rendering them ineffective. How to choose coolant: The key indicators for coolant are freezing point and boiling point. Market options include freezing points of -15°C, -25°C, -30°C, and -40°C. Generally, select a coolant with a freezing point at least 10°C lower than the lowest temperature in your region.