if you've done that, had it for a run and made sure your blowers will blow hot, let it cool down completely and just make sure that the coolant level is on the max mark (when cold) ive drpooed my coolant several times over the last few months for 1 reason and another (split hoses split gaskets, posour head etc) and ive never had a problem with air trapped in the system by doing what is mentioned above.