How often should you bleed brakes?

Becasuse, one of my friends, bought an avid juicy three, and it is a pile of censored , he had it bled at a shop for 12 pounds, it was great, but then after a bit it returned to what it was before the bleed, you have to pull it to the handlebar to stop, I'm wondering if this is to do with it needing a bleed or piston ajustment or whatever,
so please tell me how often to bleed
and what might be wrong with his shitty brake
Also, should I reuse the oil that comes out when I bleed my slx brakes?
so please tell me how often to bleed
and what might be wrong with his shitty brake
Also, should I reuse the oil that comes out when I bleed my slx brakes?
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Posts
have a look in the FAQs.
and try adjusting the reach.
Parktools :?:SheldonBrown
Bump another post and the who topic will go.
try reading the rules as you seem to have forgotten them.
Parktools :?:SheldonBrown