I fear i have blown my head gasket, i noticed on friday my temp rose to 95 when it normally sits at about 70. i checked the water but there is no oil in it but there is a yellow scum inside the oil cap and the tem is rising to 90 very qikly now. does this mean the head has gone or could it be just choked, ( the car still drives really well so i dont think it is choked)
