My check coolant light is on. I had to replace the radiator, in a 97 740il. May have air in the system, I have driven it now for a couple of weeks and the light will not go off. The bleed valve i have opened when the car is semi hot to see if i can get the air out, or to come to the top, but no success. By the way should the stick coming out of the filler be sticking out an inch or two? Please advise!