Here lately I have been having to add around 6 or 8 ounces of coolant (engine ice) to my 06 450F. It started about 4 weeks ago cause I check my coolant level before each race. I first noticed it a month ago and had to add about a cup. A week later after another race had to add about 6 ounces. Checked it today after I raced this past sunday and the level was correct (just under the overflow hole). I started it up and let it Idel for about 3 or four minutes and waited a few minutes and checked it again and the level fell just above the fin holes and I added about 6 ounces. What could be the problem to where the coolant is going? It is not leaking from the pump houseing or at the drain bolt, its like it is evaporating.