Yes - Oil First
deeman - On our H23 we used teak oil, first, on all trim, including toe and hand rails. We also used teak oil on the salon table and the wood divider between the v berth and main salon, although I'm pretty sure that wood isn't teak (it is lighter in color, but that could also be the result of the original finish). Then we applied the Helmsman Spar Urethane. We used red oak stain on the plywood seating/storage structure below, followed by the Helmsman. In fact, we tried teak oil there also but it didn't adequately color the stains that had developed from mold. I did wash first with a clorox solution and sanded fairly heavily. The mold itself is dead/gone, but the plywood still had stains. The boat had really been neglected, allowed to get wet inside and never dried out. Anyway, the Admiral did the lion's share of the wood refinishing with amazing results. You can see your reflection in the table and cabin divider, and you can bounce bullets off all of it without marring the finish. I apologize for not having a picture. The window and companionway trim turned out darker than the hand rails, not exactly sure why, but they are all beautiful and not positioned side by side.By the way, I masked like an obsessive fool (which basically, I am) and it really paid off. Just don't let the masking stay in place too long after you are done, especially topsides - it leaves a sticky mess.By the way - don't get the oil on your gel coat - it stains it.Oil first - then urethane.... Mike