If you install a new HE or pump, and don't clamp off hoses, you'll lose a lot of coolant.

I've read on here that you just fill up the resovoir and go, and possibly fill more later, and the system will self-bleed the air. But if you look at the system, there is no hose that goes straight up to the resovoir to let the air out. The hose that goes up to the resovoir dips steeply down before finally going up to the resovoir. How can air be self-bled/burped out of a system with the only escape path (that I can see) not going straight up?

Just curious.... In case I need to bleed after doing my pump.