How often should the coolant be replaced in a Buick Excelle?

[DelCarlos]

For a Buick Excelle, it is generally recommended to replace the coolant every two years or 40,000 kilometers. Below is more information about automotive coolant: 1. Coolant is a special additive-containing liquid primarily used in liquid-cooled engine cooling systems. It offers excellent performance in preventing freezing in winter, boiling in summer, and providing year-round protection against scale and corrosion. 2. Engines and their cooling systems are made of metal, which can corrode and rust when in contact with water at high temperatures. Coolant has anti-corrosion and rust-prevention properties. 3. Over 95% of coolants used domestically and internationally are glycol-based water solutions. Compared to tap water, glycol is notably effective in preventing freezing, has a high boiling point, low volatility, moderate viscosity with minimal temperature-related changes, and excellent thermal stability.