Help please asap! Prius showed signs of low oil but only at 2k mile interval (it's an 08 and I'm getting what I can out of it). anyway, I topped it off yesterday, probably more than I should have. Well this morning I go to drive and after 10 seconds it sounds like a motorcycle starting up and is getting increasingly louder. Honestly like a roaring sound. I stopped immediately, drained some oil, tried again, same thing. I'm not about to drive it today because it sounds like it could explode with me inside it! When I get home today I plan to do a full oil and filter change, but what could have caused this? Did I damage something?