LeftieBiker wrote:downeykp wrote:No it is stupid. I have been doing all of the maintenance on my vehicles since the 70s. If the color of the fluid is great and it is full, there is no reason to do anything. What "expensive repairs" would you be talking about?
If you want to over maintain be my guest. Otherwise bugger off!
Water in the brake fluid can eventually lead to rust in the braking components and possibly failures. How common that is depends on the climate and on driving conditions. There is no single answer for every driver on this, so telling people to "never" have the fluid changed isn't good advice. 3-4 years is a good safe interval. BTW, there were no ABS systems in wide automotive use in the Seventies.
But there was fluid and moisture in the 70s. I have never had to change brake fluid in any car because the fluid was bad. Never! I live in Hawaii where corrosion eats up everything. I have seen metal brake lines corrode to the point that brake fluid needed to be changed because it fell all over the ground.