I would just drop it out the bottom rad hose. I would just flush it through with water a few times then put the hose back in.
Get a 2l coke bottle and cut the bottom off and put some insulation tape around the top and wedge it in the header tank. Then the idea is to keep the bottle topped up and fill it with the bleed points open. Then start the car and bleed again. You will want to do all the bleeding with just water then drop half the water out and put your coolant in
http://306oc.co.uk/forum/thread-20731.html
Get a 2l coke bottle and cut the bottom off and put some insulation tape around the top and wedge it in the header tank. Then the idea is to keep the bottle topped up and fill it with the bleed points open. Then start the car and bleed again. You will want to do all the bleeding with just water then drop half the water out and put your coolant in
http://306oc.co.uk/forum/thread-20731.html