Your engine works hard, and one of the most overlooked aspects of its health is the coolant. It doesn’t just prevent overheating—it helps maintain optimal engine temperature, protects metal components from corrosion, and improves overall efficiency. But like any other fluid, coolant degrades over time. Here are five clear signs it's time to flush and replace your radiator coolant, ensuring your vehicle stays in peak condition. 1. Rising Engine Temperature One of the earliest indicators is a steadily increasing temperature gauge. If your engine warms up faster than usual or overheats during normal driving, degraded coolant for car systems could be the cause. It may no longer be circulating effectively or has lost its thermal properties. 2. Sweet or Pungent Smell from the Engine Bay Coolants often have a sweet scent due to ethylene glycol. If you notice this smell near your car, it might be a sign of a radiator coolant leak. Addressing it early can prevent costly engine dam...