basically get the main air bubbles out of the system with the radiator cap (main) then when car has warmed up, put cap back on radiator
then open the bolt on the top of the engine, do not remove bolt, only loosen to allow air to escape, once there is no more air coming out of the bolt hole, tighten it back up
since that bolt is the highest point in the system, the air will makeits ways there
also this needs to be done with the heater on