I am about to embark on the task of changing the thermostat on the i6 using the great post - https://www.freel2.com/forum/topic32245.html

I have read a number of posts about this task, can anyone advise on the easiest way to drain the coolant, having removed the under-tray and peering towards the base of the radiator it looks a real sod to remove anything related to cooling pipes,

thanks