Can red coolant be mixed with red coolant?

[VictoriaDella]

It can be mixed, but the components must be the same. Here are the details: 1. The color of antifreeze is only related to the dye, used to distinguish it from other liquids and for leak detection. Of course, mixing antifreeze of different colors will cause a color change, affecting aesthetics, but the key issue is that if the components are different, there is a high risk of sediment formation, which can block the pipelines. 2. Antifreeze of different colors and brands may have vastly different chemical properties and compositions. The most commonly used antifreeze on the market today is ethylene glycol-based, but the corrosion inhibitor components differ (mainly inorganic salts). Once mixed, they can easily produce sediment, causing significant damage to the engine—ranging from overheating in mild cases to severe engine seizure and scrapping in worst cases.