I have 2012 vw tiguan and yesterday i drove it and it seemed like it was losing power but i figured that was just from the turbo being out so... i parked and then when i went to go turn it on it cranked and the motor was shaking so i stopped turned it off and checked the oil i was low "bone dry" so i went a bought Castro 5w-30 and i put it in pressed the gass a little and then it shook and died. i looked at the codes it was pulling through fixd and it said 8 problems and that the cylinders misfired why would it do this and how do i fix it. there is 86,000 miles on it and i had just had the fuel pump replaced and spark plugs not that long ago why would it do this?