Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
Oxalic acid. Comes in a powder form. Make a paste and apply to the area. Very strong wear gloves and eye protection. Rinse away with water dry buff and re wax.
Good and cheap old Joy dish detergent does a pretty good job of cleaning the topsides, including removing teak oil stains. When I bought "Even Chance" four years ago, I was impressed with how good her topsides looked for a thirteen year old boat. I asked the PO what he used to clean the boat, thinking he would name some exotic and expensive formula only available from West Marine. He grinned and said, "Joy detergent."
I reoiled the teak yesterday. A woman on another boat at the marina asked me what I was using. I told her teak oil. She then went on an extended dissertation about how much she liked Cetol: she puts two coats on every spring, and two coats in the fall, and has used it for ten years.
I wipe the oil on, not very carefully, and then wash the boat down with Joy and water. The teak and fiberglass look great. Four coats a year? I don't think so: I'd rather sail.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.