been trying to do a coolent chnage on my mini and cant for the life of me get the lower radiator pipe off seems to be stuck, how do i get this thing off

Hi All, I’m a little late introducing myself having been a member since 2013 but better late than never! I’ve used the information on the forums a lot over the years so thank you all for your contributions. Sadly I no longer own a Mini but I’d love to be reunited with my 2005 Mini Cooper R50...