the 1.9 multijet 130 model 06 plate ... had a oil drip on the floor checked it out at mates garage and was coming from turbo really bad .. so we cleaned it up and fitted a oil catch tank now i rarely drive it as i need a drive shaft and kinda skint with crimbo just been .. will replace soon ... but it filling up rather fast and i blocked the hole off on induction side and have an air filter running on the catch tank (mot is no issue) is this a common fault or a major issue....not leaking oil from anywere else ...car has 67 thou on the clock thanks for any help