how long does it have to run to burp.. once it is at normal temp?

 

about 30 mins with the cap off. Just keep adding coolant until it does not drop after 5 mins of running.

That is what i did. She runs very cool. But I have a 180* stat and used a 40/60 coolant/water mix. It was the hell burning dead of summer when i flushed the system,a nd I am living in Arkansas. So I went with more H20 to get more cooling properties. I need to fix that now as the frost is coming.