Power steering fluid, also known as power steering pump oil, is typically recommended to be replaced around 40,000 to 50,000 kilometers of driving or every 2 years. There is no specific guideline for the timing of power steering fluid replacement; usually, it is judged by observing any color changes in the fluid. If the steering wheel feels heavy when turning, it is likely that the power steering fluid has deteriorated, leading to a decrease in steering assistance, indicating the need to consider replacing the fluid.
While the replacement cycle for power steering fluid serves as a reference, the actual timing should depend on the specific condition of the vehicle. The role of power steering fluid is to make the steering wheel easier to turn. Therefore, it is advisable to check the condition of the power steering fluid every six months and replenish it promptly if any loss is detected.