What Causes Antifreeze to Change Color?

[DeEliana]

If the antifreeze changes color, it is likely due to deterioration, which not only reduces its antifreeze properties but also diminishes its cooling effect on the engine. Here are the specific details: 1. Regular Replacement: When the engine operates at high temperatures without effective cooling, the viscosity of the engine oil decreases, leading to wear and tear on engine components over time. In severe cases, the engine may even be rendered unusable. Given the high cost of engine repairs, it's crucial to adhere to the antifreeze replacement schedule. 2. Radiator Issues: Another possible cause is the mixing of antifreeze with engine oil, which can occur due to problems with the oil radiator or filter, or possibly due to seal aging. While the consequences may not be as severe as antifreeze deterioration, it still affects performance. Don't wait until the engine overheats ('boiling over') to take action; visit an auto repair shop as soon as possible for a fix.