I just changed the oil about 1500 miles ago, and when i did i also took off the front head due to burning oil in my cylinder #5. When i took off the head, I found that something had been smacking around on the piston, so i put it back together with the thought of rebuilding the engine when I would have money. But when I came home after work on tuesday I heard a knock so i shut the car off and put oil in it then i started it up and oil spewed out around the oil filter so thats when i decided to call it quits.