Red Seal Automotive Service Technician Practice Exam

How often should the coolant be flushed from a vehicle's cooling system?

1. Every 1 to 2 years

2. Every 10 years

3. Every 2 to 5 years or as per manufacturer recommendations

4. Every 3 months

The correct answer is: Every 2 to 5 years or as per manufacturer recommendations

The correct answer emphasizes the importance of following the manufacturer's recommendations regarding the maintenance of a vehicle's cooling system. Typically, coolant should be flushed and replaced every 2 to 5 years, depending on the type of coolant used and the specific requirements outlined in the vehicle's owner's manual. This interval accounts for factors such as the degradation of coolant properties over time, the accumulation of contaminants, and the potential for corrosion within the system. Regularly flushing the coolant helps maintain optimal engine temperature, prevents overheating, and extends the lifespan of components such as the radiator and water pump. Additionally, using the manufacturer's guidance helps to ensure that the right type of coolant is used and that necessary maintenance practices are adhered to, ultimately contributing to vehicle reliability and performance. This proactive maintenance can prevent more serious issues down the line, such as engine damage or overheating due to a compromised cooling system.