Vehicle Questions and Answers
Welcome to the Vehicle Q&A Hub. Find answers to your automotive questions, share your experiences, and get expert advice on vehicle maintenance, troubleshooting, and more!
1565 views
2 answers
The 2009 Honda Civic is filled with genuine blue Honda coolant from the manufacturer, which offers optimal cooling performance. It is recommended to continue using this OEM coolant for the best results. While Honda or an authorized dealer will typically use the OEM coolant, if a third-party shop has previously replaced it with a different option, be sure to verify the type before adding more. If uncertain about the coolant type, adding distilled water is a safe alternative that will not damage the vehicle's cooling system and will help maintain the proper level.
In 2009, the top choice for Honda Civic coolant was the Prestone antifreeze solution.