hello, I have a 2002 2.5ts impreza. I just recently got this car, I let it run for a little over an hour and it ran fine. only code it threw was the knock sensor also had a bad clutch. so I pulled the motor put the knock sensor and clutch in also did the timing belt and water pump while I had it out. I put the motor back in started up runs and drives fine with no codes but literally pukes a quart of oil out the exauhst manifolds within 20 minute but doesn't overheat and not loosing any coolant. im completely lost.