Does it matter if the brake fluid hasn't been changed for seven years?
2 Answers
Brake fluid replacement must strictly follow the maintenance manual requirements and should not be overdue. Prolonged use beyond the recommended period will affect the performance of the brake fluid and may compromise the safety of the braking system. Here's how to determine when to replace brake fluid: 1. Moisture content: The replacement cycle varies by vehicle model, so always refer to the maintenance manual. A moisture content of 1% is normal, while 3% generally suggests replacement is needed, and 5% requires immediate replacement. 2. Color: Qualified brake fluid is slightly yellow. If the brake fluid becomes cloudy or black, it must be replaced.
Not changing brake fluid for seven years is a bad idea. This stuff is highly hygroscopic, and over time, the increased moisture lowers its boiling point. During braking, high temperatures can cause bubbles to form, leading to failure. I've driven many older cars, and the risk of brake failure is quite high, especially during hard braking when the pedal feels soft—it's a dangerous feeling. Get to a professional repair shop for a fluid change ASAP. It's recommended to check it every two years; it doesn’t cost much but ensures safety. Also, pay attention to unusual brake noises or longer stopping distances while driving—prevention is key. Don’t wait for an accident to regret it. Car maintenance is like a health check-up; the sooner you address issues, the more peace of mind you’ll have.
