Not Changing Coolant for Ten Years
3 Answers
Follow the coolant replacement interval specified in the vehicle's manual, typically every two years, though some may indicate 4-5 years or longer. Adhere to the owner's manual instructions. Below are extended guidelines on coolant: 1. Regularly check the coolant level; if below the minimum mark, replenish promptly. 2. Before each winter, measure the coolant's freezing point to ensure it remains 15°C to 20°C below the local minimum temperature. 3. For vehicles without specified replacement intervals, assess the need for replacement by observing the coolant's condition—cloudiness, sediment, or excessively high freezing point. 4. Coolant colors may vary across different vehicle models; avoid mixing them.
Ten years ago, I bought a car and never changed the coolant. Then last summer, disaster struck. While driving on the highway, the engine temperature shot up. When I stopped, I saw smoke coming from the engine. After towing it to the shop, the mechanic said the coolant was full of rust and sediment, completely clogging the radiator and hoses. That’s when I learned coolant isn’t permanent—the additives break down over time, losing their anti-rust and anti-boil properties, which led to metal corrosion. The repairs, including replacing the pump and hoses, cost me 1,500 bucks. Now I change the fluid every two years without fail. Don’t make the same mistake I did by putting it off—delaying can double the cost. Check the coolant level and color; if it’s cloudy, it’s time for a change. Thanks to that lesson, I now pay more attention to maintenance details.
My car has been running for ten years, and the coolant has never been changed. Recently, I noticed something strange: the engine temperature is higher than usual, and it struggles when starting on slopes. After consulting a friend, I learned that aged coolant poses serious risks—it oxidizes and becomes more acidic, corroding the water pump connections and aluminum engine walls. The longer you wait, the worse the damage gets. I immediately went to replace it, and the mechanic said the old coolant had turned yellow and clumped up. If left unchanged, it could lead to leaks and overheating. Neglecting such a small thing can be risky, especially in winter when frozen pipes might burst. I suggest you address this issue immediately—just flush and add new coolant. Don’t end up like me, almost facing major repairs. Regular maintenance saves hassle and money, ensuring safe and worry-free driving.
