hi guys, ive recently bought a 2007 audi s3 with 88k on the clock. the other day i was driving and all of a sudden something underneath just went bang bang bang aswell as my heart lol. so i parked up and switched off the engine straight away.. looked underneath the car and all the gear box oil had leaked out.. now i dont know much about cars so i assumed straight away oh oh there goes the gear box.. ive then jacked the car up looked under and seen a big hole in the transfer box..from there ive droves there car home which was about 0.2 miles away. ive parked the car up for a few days looking for transfer boxes.. today ive got in started it up, put it in reverse and the car wont go back? ive put it in first but its very jumpy like somethings gonna snap.. any advice on what to do and what it could be? it wont have affected the gear box will it?