Body Caulk

[Chris Tucker <list@mysystemadmin.com>]

What is the consensus on the use of body caulk to seal seams.  Should I
caulk all the seams where sheet metal touches the frame or would it be
better to leave a gap between the sheet metal and the frame with the
idea that water may get in but should come back out.  I am unsure how my
BJ8 was done at the factory since it had been undercoated.  Still, it
looks like there was body caulk on all the seams underneath the chassis.

Chris