just put a power bleeder on the reservoir then go n.s.r o.s.r n.s.f o.s.f untill there is no air bubbles left in the system takes about 20mins if that u will need about 4L if your doing the system from empty and i do it with the ignition on so the abs pump accumulator is pressureized never let me down!. But if u dont have a power bleeder then a mate on the pedal is just as good