I noticed my brakes were a little weaker than normal the other day and topped off the MC.... Slowly the MC seems to be loosing fluid and I noticed than not only is the ebrake a little weaker, but I also have fluid leaking in my passenger rear brake assembly... I suspected it to be the brake cylinder leaking but it looks completely dry (and muddy) while the shoes, drum and wheel well are all kinds of lubed up with what I assume is brake fluid. Last wheeling trip involved a lot of water and very cold temperatures. My rear brakes froze up badly as I mistakenly used my parking brake while on top of a windy mountaintop....... Would this cause something to brake Could it be something other than the brake cylinder? Somehow related to the ebrake instead, or does the ebrake work through the brake cylinder....? It seems to drip toward the rear side of the tire (toward the back of the truck) Probably a newb question, but its my first experience with drums..