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The 2012 Kia Sorento uses Prestone 1 gallon yellow 50/50 coolant/antifreeze. It is recommended to replace the engine coolant every 100,000 miles or after ten years. As engine coolant ages, it loses its ability to prevent corrosion and provide proper lubrication. This can lead to radiator corrosion, which can cause rust buildup in the radiator and engine. Signs that a radiator flush is needed include coolant leaks under the car and unusual grinding noises from the engine. Other indications of a malfunctioning cooling system include a smell of antifreeze or the car overheating too quickly.
Prestone's 50/50 mixture
The recommended coolant for the 2012 Kia Sorento is Prestone 1 gallon yellow 50/50 coolant/antifreeze.