Well I was driving my miata about 3 weeks ago and I over heated it and I pulled over to the side of the road and got to pour some water in and it was leaking the water from the back of the head down the tranny. So I pulled it off and I resurfaced the head and put a new gasket and new gasket on my coolant passage by the thermostat. Well after driving it for 30miles I over heated it again I looked down at my temp gauge and it was normal and a min later I look down again and it was all the way on hot. Well this time it mixed my oil is there a big chance I would've warped my head? or just blew the head gasket?