Why do I need my coolant system flushed?
Not changing the coolant in your vehicle on a regular basis may affect engine performance. So, it's important to have it serviced routinely as part of factory scheduled maintenance. 

What are the symptoms when a coolant flush is needed?
If the coolant has not been flushed regularly, you may experience one of more of these symptoms:
• Engine overheating
• Coolant loss through leaks
• Sweet odor inside vehicle
• No heat from heater

How often should the coolant be changed or flushed?
On older vehicles, it's often recommended to flush the cooling system every two years or 30,000 miles. Many newer vehicles have extended-life coolant that can last up to 100,000 miles. It's always recommended to follow the service intervals in the owner's manual. Following the required services listed, whether it's a coolant change or coolant flush, will help ensure the longevity of the cooling system, as well as the rest of the vehicle.

Outside of routine maintenance, coolant may need to be drained and replaced when repairing a cooling system leak. In that case, a full coolant flush should be performed if excessive corrosion is present, or if the factory scheduled service interval has already been passed.