Depends how much you drive. The upper acceptable limit is 1l/1000km. Mine does 0.1l/1000km and seems to leak some oil at the vacuum pump.
I do around 100 - 130 Mile by day and the out side temp around 104F
I notice there was leak from the vacuum cover so I sealed it with silicon (blue silicon) as gasket I feel like the boost is good now no more hesitation so I think it shouldn't drip oil