<It is a nice looking treatment and offers easy maintenance but I am worried about any deleterious effects of the oil on the caulking.> <snip> Having spent most of last summer recaulking our top deck, I can attest to the deleterious effects of teak oil on the bond between the caulking and the teak. Furthermore, if the PO was as shortsighted as the current owner of our boat, pressure washing only accelerates the process. Our decks are now a natural weathered gray, and we've grown to like the look. And it's not as hot on bare feet when the sun's shining on the deck. Doc Weston "Wife's Name" 49' Albin Orcas Island, WA