So I put the pipe in and filled it up with coolant and bled it as per the book, fairly painless experience given easy it is to access that pipe.
So I done something daft in that I removed some of the coolant from the header tank before replacing the lid to get the levels right without considering that the levels were higher than they usually would be given the temperature
Anyhow, I looked in the header tank this morning and it looked empty so the first thing I did was half twist the rad cap to see if it had gone further than that but it hadn't so I tightened it back up again. So I topped up the coolant and it only took maybe 300ml to get it within sight again but now I'm not 100% sure if there's a slight pocket of air in the pipe from the header to the radiator
Anyway I took it for a drive to get it up to temperature cause I wanted to double check it wasn't coming out anywhere, maybe I should have flushed all the coolant out of the pipe to the top of the rad but didn't think of it at the time.
Please tell me I don't have to bleed it again
