The 2001 Dodge Durango's owner's manual recommends using a
50/50 mixture of ethylene glycol-based coolant and distilled water. It's crucial to
NOT use just straight coolant or tap water. The manual may also specify a particular type of coolant, such as one meeting a certain specification (like Dex-Cool or a similar equivalent).
To be absolutely certain, check your owner's manual. The specific recommendation might be detailed there, including any required additives. Using the wrong coolant can damage your engine.
