oil baffel box is not really big enough to cope with a turbo engine as the zetec are known to breather pretty heavy as standard so everyone blocks the front , drills and taps stubs in the back of the engine 1 or 2 depending on the engine power output , some like 1 others like 2 and fit a large bailey breather tank , most cars ive seen that have got small or standard breathers blow lots of oil when being driven hard on track etc. it makes sense that if you double the power output of an engine then more or likey that everything else needs to double .

cheers paul