What type of caulk

[nscaler2]

My 3055RL has a joint or two that need to be re-caulked. One is where the fiberglass end cap joins with the side of the trailer on the door side. What type of caulk do you recommend??
Thanks

 

[khd995]

I was told to use Dicor.

 

[HappyKayakers]

Isn't Dicor the self leveling stuff? That would be great for the roof but not the sides.