The oil is burning out of the exhaust. I have noticed it use too much. Unfortunately it rained all day and my other project takes my garage space (first world problems) so I haven't had the chance to drop the down pipe but I plan on it today when I replace the uppipe. I noticed those but they're slightly harder to get to. How much oil would be a normal amount to get to everything? A lot came out when I opened the lines at the turbo and housings. I really hope it's not that deep of an engine issue. As for the OCVs that was something I wasnt aware of. What problems does it cause?