A brake flush is a necessity in modern vehicles. Brake fluid is a hygroscopic fluid. It absorbs water. Over time, this can damage brake system components from the I side out. With the integration of ABS,Traction Control, Vehicle Stability Systems with integration to engine management, a brake flush is highly recommend to ensure the life of the valves in the system. It is not a standard interval. Brake fluid is clear, when it starts to darken, it should be changed.
Originally Posted by kccountryboy
Ok, you obviously are well versed and I won't dispute what you say. It's been a couple of decades since I twisted wrenches for a living and I certainly agree with your thoughts on the other systems. I pay a shop for maintenance now but I own several late model vehicles that I've had brake work done to and I'v not had to replace any hydraulics, just pads and rotors. I usually replace the rotors because they are not that expensive as opposed to resurfacing. Your point on fluid is well taken but I guess I'm a dinosaur who's not convinced it's necessary.