What happens if the car maintenance mileage is exceeded?

[OWilliam]

The hazards of exceeding the car maintenance mileage include: 1. If the engine oil exceeds the maintenance mileage, it will lead to poor oil fluidity and changes in viscosity properties. The engine will not be properly lubricated, resulting in increased wear and higher fuel consumption; 2. If the coolant exceeds the mileage, the cooling system's heat dissipation performance will decline. The deteriorated coolant can easily form scale in the system, reducing the engine's heat dissipation performance. Excessive temperature can easily cause the engine compartment to catch fire; 3. If the brake fluid exceeds the maintenance mileage, its boiling point will decrease. Prolonged or frequent braking can cause the brake fluid temperature to rise and boil, producing bubbles that directly lead to weak or failed braking.