How often should car brake fluid be replaced?
2 Answers
Car brake fluid should be replaced every 2 years or 40,000 kilometers. After being used for a certain period, the brake fluid's water absorption can lead to a decrease in boiling point and weakened braking performance. It is essential to regularly check the quality and performance of the brake fluid based on climate, environmental conditions, seasonal changes, and working conditions, and replace it promptly when necessary. The official maintenance intervals specified by different car brands vary, depending on the brake fluid brand and vehicle model. Brake fluid has certain corrosive properties and strong water absorption, so it is crucial to replace it regularly when the maintenance time is due. The maintenance cycle recommended by the manufacturer should be followed.
How often should car brake fluid be replaced? I've encountered this issue multiple times, after all, I've been driving for over a decade. Brake fluid is highly hygroscopic, and once it absorbs moisture, its boiling point decreases, potentially causing bubbles during braking and leading to brake failure. My personal habit is to replace it every two years, or at the intervals recommended in the manual. I remember last summer when I almost rear-ended someone; a subsequent check revealed that the brake fluid's moisture content exceeded safe levels, and its boiling point had dropped to dangerous levels. Now, during every maintenance session, I ask the technician to test it with a moisture test pen, and if the moisture exceeds 3%, I replace it immediately. For safety's sake, don't delay the replacement—find a reputable shop to handle it. It's a small cost for peace of mind.
