It took "rtstone" about a bottle and a half for the brakes. I've read it takes about a bottle for most people. So have at least two on hand, but don't open the second bottle until it's needed. Brake fluid absorbs water in the air after it's been opened.
Brake Fluid Change Procedure
As noted in the thread above, this power bleeder is awesome.
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Big Sky's one man brake bleed using the above power bleeder.
one man brake bleeding diy
Peaty's clutch bleed procedure.
Kastle and Peaty's brake two man bleed.