How often should engine coolant be replaced?

The recommendation to replace engine coolant every two years is based on several critical factors that ensure the longevity and performance of the vehicle's cooling system. Over time, coolant can degrade due to various factors such as heat, exposure to air, and the presence of contaminants. Regular replacement helps to prevent oxidation and corrosion of the system's components, such as the radiator and water pump, which can lead to costly repairs and potential engine overheating.

Engine coolant contains additives that inhibit rust and scale formation. These additives can lose effectiveness over time, making it essential to refresh the coolant periodically. By changing the coolant every two years, you help maintain its protective properties, ensuring the engine remains at an optimal operating temperature and reducing the risk of failure due to overheating or corrosion-related issues. This timeframe aligns well with many manufacturers' recommendations, promoting the best practices for vehicle maintenance.