M_Boats: teak

Hello all, after putting in a line organizer and repairing the part of the deck that came with the tabernacle I am removing and refinishing the teak loop handles and other removable teak parts. Two questions, should I be using teak oil on these parts or Cetol? What would hold up better and what would be the differences? Also, should I use some 3M 4200 sealant when putting these back or 3M silicone or nothing, as was done previously? Thanks in advance! Robbin