where is my brake fluid going. i cant find a leak. and every week or so i can check it and it will have gone down. i let it go for a while without checking it and lost brakes on the road. i checked it and it was very low.. anyone got any ideas

 

It has to be leaking somewhere.
If you are finding no visable leaks perhaps into the hydro boost.
Is your PS fluid level getting higher?

 

Mine did the same ... rear wheel cylinders! Check to see if you have a damp spot on the backing plate, if not , remove the wheels and check. My shoes were soaking by the time I caught it.