Yea, driving on the interstate, I look in my rearview to see if i can merge, and I noticed that some smoke was coming out of the exhaust. A few miles later, my low coolant light comes on, and right when I pull off the interstate, I begin to overheat. I shut it off and coasted to the nearest parking lot and let it sit. I popped the hood and steam was definitely coming from the head. Now I am sure that I have a blown head gasket, as the car (as far as I know) has its stock head gasket at 170,000 miles, but others seem to think otherwise. There is no coolant at all in the oil whatsoever, but how should I go about checking for a BHG? I don't want to buy a tester, etc. either.