When I installed a new water pump on my 2011 R3T I mixed 50/50 Oat Coolant and demineralised water ,however when I refilled the system I could not get the system to bleed the air through the air bleed near the thermostat ,I just filled the recovery bottle to completely full and went for a ride when I got home the bottle was empty after the bike cooled down, I topped it up all good since