Dexcool . they say it lasts 5 years , or 150000 , I have 43,000 only on the car. now the Dexcool in the reservoir overflow has very tiny flakes in it , but not big chunks, so I figure Ill do a complete drain and refill with fresh new Dexcool and distilled water. my question is how do I get the air out the old conventional way with out disturbing that bleeder screw , because my luck it will break off or leak so I would rather just rain it fill it with water run it drain it do it again , now when I'm ready to put the dexcool in and the rest with distilled water , how do I get all the air out , squeeze the radiator hoses , with the cap off cold.. and the fill it run it check it and redo that again .will this method work?