Volvo: bleeding cooling system 1999 V70, air pockets, high temperatures

Question
I,ve recently had to replace the heater core in my 1999 V70- The car approaches high temperatures after a short period of in town driving.  I am able to control the temperature gain, somewhat, by turning on the heater to relieve some of the engine heat.  Also, the temperature increases more radically if I am driving on an incline.  I am assuming I have air trapped in the system.  How do I go about bleeding the residual air from the system? OR is there a different reason that is being overlooked?

Answer
Christopher,
I always use a system that evacuates the air from the system to be sure that no air pockets remain. It fits on the bottle and has provisions to attach an air line to that evacuates all the air, and then suck in the new coolant. These car seem to always develop air pockets. All you can do at this point is fill it run it till hot let it cool and check the level and top it off. Do that at least two times. Do not over look the possibility that the T/stat is stuck. If it still gets hot after the cooling system is full change it and start the filling process over again.