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@mustardbeak
I wonder if any of the resident mechanics can help, I'm going to be swapping my SRAM hydro group from one frame to another.
I want to have a go at doing this myself, I'm pretty mechanically minded and do all my own work, but this will be my first go with hydraulics.
Onto my massively stupid question - I can find loads of info/videos on replacing fluid, but nothing on draining the system is it just a case of pushing all the fluid out using the described technique for bleeding rather than replacing the fluid, and then carrying out the bleed process again in full once re-installed?