Do you not know what break fluid takes or does to a bike? I almost feel like if the rear break is leaking and you cant determine that the fluid is leaking on your 1125 that you should move back down to smaller bikes.
Basic maintenance and knowledge should be given already if you are on a bike this size and powerful.
Plus, it says what type of fluid to put into the res on the lid (you know, that little black thing on the top of the thing that holds your fluid. It is used to keep the fluid inside.)
If break fluid sits on powder coat for to long (I say over 5 mins) it will eat away at it.
