Thats VERY interesting actually......the persons car who had to top up the oil, has just had the turbo let go - the cars got an Allard EGR Removal pipe on there - according to the service history its the 3rd turbo thats gone - its only on 96k - the garage said it was because its been re-mapped to roughly 180bhp & couldnt take the pressure!!

Although I thought the EGR re-circulation only occured under part throttle not under wide open throttle - if so how can the turbo overspin as I doubt you would get full boost on part throttle?