Here are some solid radiator maintenance tips to keep your cooling system in top shape and avoid engine overheating: ✅. Check Coolant Level Regularly Make sure the coolant/antifreeze is at the proper level in the overflow reservoir. Only check when the engine is cool, never when it’s hot — it can be dangerous. ✅. Use the Right Coolant Always use the correct type of coolant recommended by your vehicle's manufacturer. Never mix different types of coolant unless the label says it's compatible. ✅. I

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