I have a 98 Durango SLT 4x4, 5.2. Engine had a tick at startup then would smooth out. Yesterday the tick continued, then about a mile into my drive, the tick became a knock/rattle sound. I lost all oil pressure. I pulled into a parking lot within a couple minutes and shut it off. At that time it was overheated and boiled out from the overflow tube. After being towed home, I have not touched it. Is my engine toast or can it be saved? I've heard about the oil pump problems, so hoping I can just replace oil pump