Mitsubishi Eclipse frequent antifreeze loss every two weeks, potential engine issue on Mitsubishi Eclipse

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mitsubishi Eclipse owners report experiencing frequent antifreeze loss every two weeks, which may indicate potential issues with the engine or cooling system. These owners have noted that antifreeze can leak from various components, including the reservoir, radiator, or hoses connected to the engine. They often find that coolant leaks are most likely occurring at the connections of the hoses to the engine or radiator, or they may discover a radiator leak. Additionally, valve cover leaks are a common problem in Eclipses, and if not addressed promptly, they can lead to significant engine issues. Some owners have experienced overheating and potential engine damage due to coolant leaks that were not fixed in time. Therefore, it is crucial for owners to thoroughly inspect these areas to identify the source of the leak and address any potential engine issues to prevent further damage. Regular maintenance and timely repairs are essential for maintaining the health of the Mitsubishi Eclipse's engine and cooling system.

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