Tips for coolant fill?

[skyphix]

Originally Posted by ls1nova71

I think all thermostats have a small hole in them. The problem is, if you rely on that, you're essentially filling the block through an 1/8" hole, it will eventually fill, but will take a very long time. Filling through the upper hose is the best way to fill a swap that doesnt have a factory surge tank.

How about for those of us that DO have the factory (LS. 2006 Yukon) surge tank and radiator setup? I figure still fill through the top hose, then keep topping off the surge tank? The radiator is also bone dry (new radiator.)