Topman121

Hi all My new to me 2016 superb L&K coolant level was dropping to below min level every 3 or so days, I topped it up from below min to max every time. Car has 120k miles with full Skoda dealer history to 118k last serviced at dealer in January. I’ve changed the T belt kit and waterpump 3 days ago with genuine parts for peace of mind and noticed the waterpump impeller shield has seized in the closed position, thinking this was my problem sorted with the new pump but after bleeding the car properly I’m sure there’s no more air in the system the coolant level is still dropping!? New EGR cooler was fitted at dealer last year, no visible leaks anywhere. New coolant tank and cap fitted also 3 days ago? Anyone shed any light on this? Cars not over heating, no pressure in coolant tank next morning and not mixing oil or water. Thanks