Does anyone know how to bleed the coolant system. I looked in the owners manual and all it talked about was the bleed screw. I think i have an air lock and i took DE advise earlier, but dont think that worked. So my plan is to flusha nd drain the system and try to see if that will keep it from overheating. So, is there another way or technique to do this or just doing the bleed screw is all i need to do.