冷却液该不该换、能不能补？先核对规格，再讨论颜色和年限

Coolant color does not reliably establish chemistry or compatibility. Identify the exact specification, the fluid already present and whether a replacement product is premixed or concentrated. Recurrent loss needs investigation, not indefinite topping up. Never open a hot system. Some electrified vehicles have multiple cooling circuits with different service requirements; do not assume one fluid or owner procedure applies to all of them. Use the correct vehicle's time and mileage schedule and a documented workshop plan when the existing fluid is unknown. Keep a record of the specification, product, work performed and follow-up checks.