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For a 2007 Dodge Durango, it is recommended to use ZereX 1 Gallon Yellow 50/50 Coolant/Antifreeze. It is advised to replace the coolant for the engine either at 100,000 miles or after ten years. Over a period of time, the engine coolant loses its ability to prevent corrosion and lubricate the engine. If left unchecked, the coolant in your radiator can lead to corrosion, creating rust that can damage the radiator and the engine of your car. Signs that you need an immediate radiator flush include coolant leaks underneath your car and a grinding noise coming from the engine. Other indicators of a problematic cooling system include the smell of antifreeze or the car overheating too easily.
The 2007 Dodge Durango relies on Mopar OEM coolant for effective cooling.