Posted 4 March Hi,I need to change the oil in my Matco brakes on my Avid Mk4. I was thinking about doing it the same way I do on my mountain bike brakes, which is to open the vent on the master cylinder and then suck out the fluid with a syringe from the bleed port on the caliper so that the system will be empty. Afterwards, I would the fill them up with new fluid again from the bleed port.Any reason why that would not work? I got the Matco MC-5 master cylinders.Thanks! Share this post Link to post Share on other sites
Posted 4 March I always fill from the bottom. I don't think it matters how you get the old fluid out but your idea sounds great. 1 person likes this Share this post Link to post Share on other sites
