REBELPC- I replace my brake fluid once a year because its just a DOT3, so its hygroscopic, and 85% HUMIDITY is common in this here tropics!
I figure there isnt any harm in replacing most of the brake fluid by just bleeding the old fluid away so i get the assurance (call me obsessive compulsive if you will) of an air free brake system. I sometimes think about emptying out the Master cylinder not just from the reservoir but using compressed air to push out the little bit of fluid left inside the M/C out where the hard brake lines attach to the M/C. But then i dont know how easy or hard it is to bleed the M/C itself (since its already 11 yrs old).
I normally use the conventional bleeding sequence on my other even much older car but just thought i`d follow factory recommendations for whatever its worth(?)