I was driving to work this morning going up an incline and strangely enough, the same incline I had this happen before on, the engine overheats (it's not even a steep incline)! I had just replaced the head gasket 1200 miles ago with no loss of coolant or oil since. When I pulled over, the only place I was losing coolant from was the expansion tank overflow hose. Any idea what may have happened? I had the car towed into a friends shop and he just called and said there are two cylinders with no compression and that I need a new (used) engine. I am about to part ways if so...