You are reading a single comment by @snottyotter and its replies.
Click here to read the full conversation.
-
But if there's enough in the reservoir to not pull in air under braking then more fluid won't make a difference, it'll just top up the reservoir which is still useful if there's room, as it'll need the fluid as the pads wear and the system self adjusts.
Either there's a bit of air in the system, in which case the "burping" process I described above should help (and top up the reservoir) or possibly you're not used to hydros just tending to have a bit more lever throw, you rarely actually pull them that hard, so give it a test ride and see.
snottyotter
Well, if it’s shimano is pretty straight forward to add more mineral oil to the top chamber.
If the bike has been out riding I doubt there are any bubbles left in the hose, so it’s just a matter of topping up with mineral oil.