Quote:
Originally Posted by PRBuzz
My brown stain wiped off with my finger ...
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That is disgusting. I hope you washed your hands
On off is serious...esp if you have heavy marine growth/barnacle attachments in difficult places (like inside the seawater intake cavity in an outboard or outdrive. etc. it is battery acid I think, it just eats at it. Make use you wash it off well afterwards and don't get it on a galvanized trailer...it will turn very black and be like that forever.
FSR works on rust stains in your fiberglass that power-washing does not change.
Bleach works on most normal stains and is really cheap. Don't wear your Sunday best when you use this.