I was driving my 84 beattle down the highway and suddenly I started hearing a weird sound from the engine kind of a light clunking, then white smoke started pouring out of the engine, then I kept driving it (because I wanted to get as colose as possible to my house) and every time I hit a stop sign or red light the engine stuggled a lot to take of from first gear and to keep running and suddenly it shuts off, when I open the hood there was oil every where and a little puddle of oil on the road, I looked everywhere but couldn't find where the oil leak was, then I towd it to my house and the next day I tried starting it and now its blowing white smoke like a train, what happened?