Car decided to spit out a lot of dark smoke on the way home Sunday evening. Stopped and called the AA, got towed home. Looked at the car yesterday, seems to have dispatched all of the oil somewhere as it has no oil in it now. The car won't turn over and when it does (with a battery booster pack) it revs itself up to 3000rpm and back down again and repeats. When I rev the car myself it kicks out a lot of white smoke and I mean a bloody lot Any ideas on what the problem could be!? Help would be much appreciated.