When was the last time?
Found a great thread from 2008 but it went off on a tangent
Quote Originally Posted by Tiger View Post
...on brake fluid...it does need to be changed every 2 years. Your braking performance is really impacted by this.
Just try it on your car... You really need to keep flushing until clean fluid comes out. It doesn't take much fluid to do this job and most shops don't even do it thoroughly enough.
Quote Originally Posted by Ross View Post
Brake fluid is hydrophilic, the moisture absorbed corrodes the braking system and lowers the boiling point of the fluid. The brown color you see in old fluid is rust from this process.
Everything will last longer if the fluid is uncontaminated. The boiling point is seldom a factor for street driven cars, but try and get a race car past tech with dirty brake fluid.
Changed the fluid last night and the old stuff was rootbeer brown (black really) even thought I've changed it many times over the years and the new a light golden color. To wit:


Imagine what it'd be like if it were never changed. I did it the easy way. Jacked up the car, put it on jackstands, removed all four wheels, mityvac'd all the old fluid from the res, filled with fresh Dot 4 and opened the RR bleeder, put a hose on it and let it gravity flow into a bottle. Moved around the car (LR, RF and LF) and with less than a quart got good clean fluid from each corner.