Changed the pads today. Wore them down pretty thin, and i've done a few "lever bleeds" with the pads in to shorten the lever throw as much as possible, so there wasn't enough space for expansion in the system for the new pads. Popped the funnel on the levers, pushed back the pistons, all good. Interestingly the rear pads went first. The fluid was pretty dirty at the back even after just ~half a year, at the front it was clean. Interested to see how the purple Galfers will perform. Left the original pads in at the front, they still have a few laps in them, and this way I can feel the difference between the two.
Oh and beware, alcohol comlpetely dissolves the paint on Galfer pads...
So I think my rear lever is leaking (Deore M6100). Looks like oil is seeping out from the threads of that bolt/nut thingy under the rubber cover. Tried to tighten it more but didn't help. Should I try a new olive and insert?
BTW liking the Galfer purple pads so far. Great power, they feel a bit harder and smoother than the Magura performance pads. Right now they are making some high pitch squeaking noises, but that could be a setup issue etc. I also gave the brakes a beating on some super steep trails the past two rides. Curious to see how long they are going to last. If they last longer than the P pads then i'm sold.
Yes once you feel you are tight to the point that you shouldn't risk another turn try a new barb and olive.
Tightened it just a bit more, we'll see what happens. Annoyingly the bike shops near me don't have this olive so i'll have to order like a $1 part online... But the rear needs a full bleed anyways because the fluid is so dirty.
So I think the leak might be coming from the piston and it's dripping down on the underside of the lever. Might also be the source of the fluid going black after just ~7-8 months. Dangit... The brakes still perform great tho.