Swapping in fresh coolant and heard a brief mention of a preferred drain location other than the large coolant hose. The speaker was not specific but said it was in the same area as where the main coolant hose connects to the block. I'm reluctant to take the main hose off because they are more prone to leaks. Does anyone know of this alternate drain location and perhaps have some images to guide me? Also, do I need to drain the system at more than one location? Thanks as always for the help.