Hey guys, I'm after some help! I've got a C34 RS4 (RB25DET) and it's been running sweet. But we've been noticing that whenever I'm on a highway (Doing over 60km) and I start to slow down or brake the car is blowing white smoke which smells of oil... Not just a little bit like a cloud! We put an oil catch can in it and it only helped for a few days. My question is, Could it be the turbo seal? I'm too scared to drive the car until it's sorted, I don't like yellow stickers Thanks