I was riding one day and my clutch just went out. Just like that. I wasn't particularly hard on it and I had raced a tight hare scrambles a few weeks before, which required a lot of clutch abuse. And it worked fine for the race. I bled the clutch (its a Magura hydraulic) and a little bit of fluid came out but when I pulled the lever it felt like there was nothing in the resevoir. Then after a few more pulls it felt the same before I bled it. Should I try refilling the resevoir and do I absolutely need Mineral oil like what comes in it or can I use regular brake fluid; at least for a little while. Or is my problem worse and I need to replace the clutch components.