you don't fill the radiator to the top or it will come out the overflow when it gets up to temperature, it is normally a couple of inches down. (in mine any way.) Another thing to check is if your gage is accurate.I.E. put one in (even just temporarily) that you know is correct, with actual degree increments that would tell you what your temp is. which is basically what people have been saying by using an infared gun. I'm still not convinced you actually have a problem
