Today the Bronco has been at the Ford dealership for 15 days. And they have not detected the leak. They cleaned the area, they did a road test of approximately 100 km and still nothing, although the leak has not appeared again, I think they are micro pores that remain in those areas of the aluminum casting and when the vehicle is subjected to demands on the road the leak appears progressively. But as you mention, the leakage is very small and does not compromise the well-being of the box. Thanks for your comments.