I've just done the dumbest thing of my life and I really need your advice. I just poured oil in the coolant tank. I've drawn as much as I can back out with a turkey baster but I don't know what to do next. The car was warm but not running. 99 986, 2.5. Do I have to take out the coolant tank and clean it or is there an easy fix? Or has the whole system been contaminated? I feel sick...