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Try another prop??

westair

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This prop was polished like a mirror .... then it stayed 2 days at the marina and now looks like this!! .... now what?? It just completely took the finish off like it ate into the metal!
something I don't know about stainless?
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Mandelon

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Not hard water deposits? A little bit of pool acid and water mix should fix it. Give it a soak.

Possibly a bad electrical ground at the marina , your anodes should have sacrificed themselves and not the stainless prop. I have read that the metals from the anodes may have deposited themselves on the stainless. Doubtful the stainless is actually etched.

Muriatic Acid mixed with water. Either soak the props for a while, or keep spraying on and wiping it off. When I had my SS prop repaired the shop did it that way. They had a wide plastic bucket they soaked the propellers in. He said half muriatic, half water. Fizzed a bit then was clean and shiny again.
 
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Gramps

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never seen one that bad. On Powell, after a week or two in the water my stainless looks crappy but not like that. I do have to use toilet bowl cleaner to get it looking good again.
 

Albert

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Lime be gone will take care of it too 👍🏼
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westair

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Thanks for the replies! ..... I think I have the info and what I need to do now
 

Mandelon

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Bass lake has acidic water. We took our boat from the Colorado River to Bass for a long weekend. The prop was milky and grungy on arrival. It was sparkling and shiny when we left. So cool.
 

samsah33

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Thanks for the replies! ..... I think I have the info and what I need to do now
Watching, let me know what worked for you, I get the same thing and also leave my boat in a slip overnite @ Havasu Marina. Haven't tried pool acid, but none of the over-the-counter cleaners like CLR or plain elbow grease seem to work. I've given up at this point. Coincidentally took this pic over the weekend (not showing the big puddle of drive lube underneath 😭😭😭):

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traquer

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My dad told me a funny story when he used to work for the GM battery plant in Anaheim, he dropped his favorite screwdrivers into one of the acid containers. Many years later when they're draining the acid out for some reason, he spots just the handle of his favorite screwdriver. All cleaned off and brand new looking lol. But no metal! He still has it somewhere.
 

NicPaus

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I have a almost full Gallon of pool acid in Torrance you or anyone that needs it can have. Used it for my last boats props. Sold boat. Just put in a sprayer and spray it on and rinse off.
 

azsunfun

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I keep mine at marina never came out like that, I use the stainless spiraly looking scouring pad and water works fine. This is my prop after 6 days with fish.
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PlanB

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Toilet bowl cleaner with muriatic acid is what I use on stainless props. Just squirt it on and wait a couple of minutes and wash it off. Works great.
 

Tank

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I use Biokleen hull and pontoon cleaner. Takes the yellow stain out of fiberglass (caused by iron deposits) and it straight up makes the hazey tarnish finish melt away from polished / chrome etc.

Plus, it's not acid on your hull / parts.

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done

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un-polished prop gives you better performance !
 

Member: 71

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I used The Works, the ole version/recipe, was powerful stuff.

The new ghey version sucks.

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Nanu/Nanu

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I get that on my boat props at Powell. Its gotta be a mineral deposit. I dont hang out at the marinas every night but i camp and keep my boat in the water for a week at a time.
 

GreenEnergy28

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Update .... I was going to go straight to acid but the zep was easier to get at the moment. I 've never seen anything work so good with such View attachment 1246533 View attachment 1246532 little to no effort!! ...lol
Is that sarcasm, or was it really minimal effort? Seriously... I use CLR and it takes me a good 15-20 minutes of spray and scrub, spray and scrub. Reading this, I was ready to dedicate a bucket to muriatic acid/water, but a bottle of toilet bowl cleaner is easier to keep on my chemical shelf.
 

westair

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Is that sarcasm, or was it really minimal effort? Seriously... I use CLR and it takes me a good 15-20 minutes of spray and scrub, spray and scrub. Reading this, I was ready to dedicate a bucket to muriatic acid/water, but a bottle of toilet bowl cleaner is easier to keep on my chemical shelf.
No sarcasm ..... had the prop in a plastic pan/bowl type thing and just applied the zep and brushed it around with a paint brush, let sit for a couple minutes and rinsed. Did it a couple times.
 

Mcob25rg

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Another vote for toilet cleaner, the cheaper, the better. I like Snow Bowel. You can see it working, I don’t even touch the prop. Wet it, spray it on, wait 20-30 seconds, rinse. It really works that easy
 

Runs2rch

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Foaming Lime Away works well. Clings well eats all the deposits just rinse.
 
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