I was driving at 65 miles per hr when my 2000 nissan xterra made a sound like if it blew off. I tryed to turn it on but it jumped alot then turned off. It had no oil so i added some and it went straight to the grownd. I know that maybe the engine is gone but im hoping it can be something else. If you have an idea of what it could be or what to look for or anything please let me know. I really apriciate it.thank you