www.iFourWinns.com

How can I remove this black mark that coming from my wiper ?

I try compound/wax/soap, it wont come out. Only after a big day of sun it disappear .
But once it rain again, black mark show up ! grrrr !

any idea how to prevent that mark ?

Some will frown about this, but have you tried a magic eraser?

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2006 Vista 278
First Boat:
2005 Sundowner 205
Columbus, OH

It's a combination of air pollution and material coming off the wiper finishes.

There's not much to be done other than cleaning it up first and waxing the hell out of it. That'll help slough off further dirt later. But it will come back, this is just nature of the beast. One way to perhaps minimize it would be to switch to a different wiper arm assembly; one with a different finish.

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-Bill Kearney, 2005 348 Vista

Wash, wax with an oxidation remover, wax and polish. I do it constantly.

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-Tony
2016 Robalo R200 w/Yahama 200!

Previous boats:
2003 Four Winns 248 Vista - sold
1994 Sunbird Corsair 200 - sold
1980 Checkmate Predictor - sold

+1......lots and lots of wax

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"Changes In Latitudes, Changes In Attitudes "

1996 238 Vista dlx "Casper's Toy Too"
2006 5.0GXI w/closed cooling, DP-sm 1.95 drive
Previous boat:
1998 Sundowner 205