Hi I'm new here I've got a 2008 2.7 xf only had i a week and the thermostat housing blow apart got a second hand put it on run up about 30min took i out for drive give it a little bit and its blown apart getting another one in the morning its looking like head gasket but is there anything else it could be and wheres the thermostat. The engine runs so well I'm hoping there's something. Any help when be much appreciated. Cheers