Was just digging under my dashboard and noticed that there is some thicker oil (the kind when brake fluid is eating away rubber washers) on the end of the MC right on the firewall, and a little bit where the pedal connects. I know those are the signs of the cylinder going, but my pressure hasn't changed, nor am I low on fluid. . . . just curious what you guys think, should I just replace the MC or wait until I start losing fluid?

 

Replace it before it goes out completely.