Hey s40 fans, i have a 2000 s40 that always loses brake fluid, have to fill up reservoir every couple months.checked all wheel cylinders, no leaks or wet areas, no drips on floor. new rotors and pads. anybady have same problem, or any ideas will be greatly appreciated.

 

If there are definitely no visible leaks, allI could suggest is an internal leak into the brake servo.
Any fluid leak would then be burnt through the engine.

 

did you check all of your brake lines as well?