My camper has gone in twice for leak around grey water pipe when traveling in rain.
Dealership said it had to with pitch of the roof and water going into pipe. Their fix: silicone 1 out 3 openings on the vent pipe (what I don't get is if water is going into pipe while traveling wouldn't it end up in the tank?). I will say we traveled in rain coming home and we didn't see any water on pipe.
But now we have a pipe that doesn't have full ventilation.
Look at the pic. You can see all the silicone caulk.
Do you think this is ok?