coolant

Hey everyone I’ve got a leaking coolant hose just need some help identifying what the hose would be? It’s coming from the black hose under the 2 blue ones. I think it is the heater hose any help would be much appreciated 🙏

I've had a cracking day! The top tank of my radiator has gone kaput. I'll be needing to source a radiator ASAP. So in preparation for the easy swap over of a radiator. I need to know the total amount of coolant I'll be needing to buy. I was thinking 7 litres to be safe. As I am filling the whole...