Before my install I pulled out of a downpour and it was dry up there. I'll watch next time I wash it. But it won't leak I can assure you that. MCSyndicate said:Isn't all that dirt there because the air dam actually traps it there?
It's been my observation that when washing the truck, all the roof water runs under the basket, to that specific area, and then is usually the last part of the truck to drain dry.