A couple yaers back when I first got the RSV, we were in NC. I had not ever read about the brake fluid issues. Well after dang near running some JA in Range Rover we,were following down mountain roads and my back brake went to the floor. The dummy was riding brakes terrible. I put distance between us to start, and started using the motor way befor they went south. Short story is they went to the floor, I down shifted to 1st and used as much fronts as I could and still be safe. Got to a state park and pulled off. 10 min or so later they felt fine and we continued. Full flush happened on all 3 hydro systems when I got home. Since then I think the system has been flushed every year.