What color is the coolant in the Leopaard CS9?
3 Answers
The coolant in the Leopaard CS9 is green. The main raw materials used in coolant are colorless. Based on national standards, manufacturers add some dyes when producing coolant, so the color of the coolant is not necessarily related to its performance or quality—it mainly serves as a warning. In addition to having a low freezing point and high boiling point, coolant also has anti-corrosion and anti-scale properties. Most of the cooling system in a vehicle's engine consists of metal components. If the owner uses tap water instead of coolant for a long time, these metal components will be exposed to high-temperature water over time, leading to rust and corrosion, which can affect the performance of the cooling system.
As a long-term owner of the Leopaard CS9, I remember its coolant is usually dark blue, which I guess was originally designed to indicate an OAT-type long-life coolant. I usually check the color when washing the car and find it remains a transparent blue, indicating good condition; if it turns cloudy or has sediment, it's a sign it needs replacement. It's best to check it every two years or so to ensure the engine is protected in both winter and summer. The color not only prevents freezing but also resists corrosion—never add coolant of a different color, as it may cause chemical reactions and damage the radiator. Once, a friend of mine casually added green coolant, resulting in leaks and costly repairs—totally not worth it.
From my car repair experience, the coolant in the Leopaard CS9 is usually blue, which is the typical color of ethylene glycol-based fluid. The color is important as it helps identify leaks; for example, if there are blue-tinged water stains on the chassis, it indicates a coolant leak. When checking, don’t just look at the color—ensure the fluid level is between the MIN and MAX lines. It’s recommended to replace it every 20,000 kilometers with a high-quality brand. A deep blue color indicates high purity, while a yellowish or dull appearance should raise concerns, as it may indicate oxidation. Additionally, listen for any unusual noises after starting the engine—coolant issues can sometimes involve the water pump, but the CS9’s is relatively stable.
