diogeniS8

This is what AoA says on TB Group 15 05 03.
Categorization of Leaks.
The componenet such as the oil pan or valve cover) and immediately adjacent component it is mounted to.....

Category 1: ...may be wet with fluid residue, however there is no droplet formation and not other components are affected.
Category 2: ...is wet with fluid residue, and there is droplet formation or slight seepage, however droplets are not dropping off.
Category 3: ..... is wet with fluid residue, there is droplet formation, and those droplets are dropping off.

And to make the long TB short only when the leak falls under category 3 they perform the repairs.