[sonic_mikey]

(08-06-2010, 12:16 PM)ZTWsquared Wrote: Brake fluid is hydroscopic (attracts water) ... and over a period of time brake fluid becomes contaminated with water ... and even though it's in microscopic amounts, it is usually the water in brake fluid that boils and causes the soft pedal and increased travel.

That's why fresh fluid every couple of years is a good idea ... IMO.

Additionally - the flex lines become softer over time (relatively speaking - nothing you would notice by inspecting them) ... and that too would contribute to soft pedal and increased pedal travel.

+1, brake fluid accumulates 2% water every year and @ just 4% will turn ford DOT3 (500F boiling point) in to something along the lines of 350-400F, which will create a noticeable difference