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Old 06-25-2015, 09:26 PM   #1
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Removing waters spots on plastic cowling

Does anyone know of a compound or cleaner that can take water spots of a plastic cowling? I've tried a sort of cleaners at no avail.
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Old 06-25-2015, 10:56 PM   #2
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ammoina and water mix, or get a bottle of WINK, its a carpet cleaner but it works great on water spots,do a little section at a time and wipe with water
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Old 06-25-2015, 11:38 PM   #3
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Oliver, I get almost mould like spotting on a plastic cowl. It comes clean with Autosol Marine Shine polish (made in Germany), but it comes back. I`ll be watching the responses too.
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Old 06-25-2015, 11:46 PM   #4
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Oliver, I get almost mould like spotting on a plastic cowl. It comes clean with Autosol Marine Shine polish (made in Germany), but it comes back. I`ll be watching the responses too.

Mines not not quite that, I think they came from when we towed it for a day and a half continuos and the sun dried the salt on. You can only see it in a glare, or of you run your hand over the surface.

Thanks all with the suggestions, will give them a shot.
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Old 06-26-2015, 01:41 AM   #5
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... I think they came from when we towed it for a day and a half continuous and the sun dried the salt on...
Yours sound like the salt, a deliquescent water absorbing substance, drew on the plastic. Polish, and maybe Armor-all as a useful detailing product.
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Old 06-26-2015, 08:08 AM   #6
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White vinegar is always a product I try for stains and water deposits. Just don't let it dry on the surface. Wet surface, apply vinegar, let it "work" for a few minutes, rub with microfiber or soft brush and rinse.
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Old 06-26-2015, 11:17 AM   #7
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I've had good luck with a product called "CLR". Wipe it on, move it around a bit with a rag to wipe off the spots, then wash it off.
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Old 06-26-2015, 11:27 AM   #8
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If silicone based cleaners can disolve the glue in inflatables....wonder if the same can get under and assist in the removal of many things on clear vinyl, plastics.

Do you know what the material is? Can you find out from the manufacturer what is good or bad for it?

Before I tried something I knew was good for salt removal...I would be danged sure it didn't hurt vinyl/plastics.
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Old 06-26-2015, 12:00 PM   #9
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White vinegar is always a product I try for stains and water deposits. Just don't let it dry on the surface. Wet surface, apply vinegar, let it "work" for a few minutes, rub with microfiber or soft brush and rinse.
+1 to thr vinegar. And use your RO water with it. The vinegar resolves the salt and the RO water absorbs it.

Then polish the cowling and coat it with Zaino, Rejex or some other polymer coating to make it easier to clean off in the future. You could go high tech and ceramic coat it.
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Old 06-26-2015, 01:51 PM   #10
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It's a cowling on a evinrude etec.
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Old 06-26-2015, 02:52 PM   #11
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It's a cowling on a evinrude etec.
Try an automotive Clay bar... Great for etched windows too where normal cleaners will not work..
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Old 06-26-2015, 05:19 PM   #12
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If the vinegar doesn't do it try toothpaste. If that doesn't do it try Collinite Fiberglass Cleaner. If for some reason you are still stumped (btw all the aforementioned are useful in a boat anyway) invest in some Prism Polish a great product where a little goes a long way and thus really isn't as expensive as it seems. X2 on then treating with Rejex or Zaino or the like.
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Old 06-26-2015, 05:53 PM   #13
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Wow so many suggestions! Thanks guys, will give them a try.
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Old 06-26-2015, 07:17 PM   #14
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...and if all that fails, try Magic Eraser.
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Old 06-26-2015, 11:23 PM   #15
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Careful. I have a 2010 ETEC 130. The engine cover is painted plus a special clearcoat on top of the paint. Go easy on the cleaners as too abrasive a cleaner could mar the clearcoat or worse. Try the vinegar first. Bon Ami might work. It's not supposed to scratch paint, etc. Google removing acid rain spots off auto glass for more tips.
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Old 06-27-2015, 07:22 AM   #16
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Does anyone know of a compound or cleaner that can take water spots of a plastic cowling? I've tried a sort of cleaners at no avail.
Try the above recommendations, say a prayer, and mail your deck shoes to me.
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Old 06-27-2015, 11:10 AM   #17
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The vinegar worked! Thanks all who contributed!


I ain't sending no shoes back, i just broke them in!
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