Get information about flushing a coolant system in your car. Find out about this often neglected but important system in your car.. Discover the truth about engine flushes. Learn about the benefits, myths, and whether an engine flush is really necessary for your car's engine. Find out how to properly maintain your engine for longevity.
Learn what a coolant flush is, why it matters, and how to do it to protect your engine from damage. Read our full guide to keep your car running.. Is a Coolant Flush Necessary? by Chris Teague | March 6, 2025 Engine Coolant Reservoir / Credit: Getty Images Modern vehicles rely on coolants to keep gas engines operating within a safe temperature range, cycling the liquid through the radiator and other components to remove heat from the engine.