hi,ive got a problem on my 2.0 sport 98 gearbox major oil leak this has happend twice now,when going on a long drive motorway etc and reaching speeds of approx 80-to-100ish mph gear oil leaks on the o/s side front drive shaft and gearbox dip stick area . and then runs down on to the exhaust cat then smoke and smell everywhere this is only happening under pressure,if i drive local low speeds there nothing and no oil leaks,some one said your breathers blocked but cant find the breather on the box ,help

 

not too much gear oil in it in first place .?? maybe stupid question , i thought pipe on top of box was the breather only about 4mm pipe should be black

 

what about the valve cover gaskets ( not sure if this is the right name, where the spark plugs are ), I have a similar problem in my98 turbo. but just a little bit of oil...