Well, I got it all flushed and filled back up. I just used water, ran it, drained it, filled it again, etc, etc...So far so good. Ran the car around town running errands and it ran great. Temp was normal with no leaks. Thanks again guys for all the info.
By the way, I don't know about y'all, but I couldn't get the radiator drain valve open for anything. I got a 1/4" ext. in there, turned it, and nothing. It didn't unscrew or pop out...maybe i'm just an idiot, but I couldn't figure it out, and I didn't push the issue, because, if it can break, i'll usually find a way...I just took the lower hose off and drained it that way. So, that being said, how exactly does the drain open?