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Old 08-27-2008, 12:29 PM   #1 (permalink)
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muriatic acid to clean aluminum

A few years ago I cleaned my trailer with acid bought at a truck wash. Just brushed it on and rinsed . I now have a gallon of muriatic acid that was given to me. It is much stronger than what I had, it fumes and when it touches something. I assume it can be diluted. Can I clean my trailer with it and what ratio should I dilute it with water.
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Old 08-27-2008, 01:07 PM   #2 (permalink)
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I don't know about cleaning aluminum but it works great on masonry. You can dilute it with water and try a small part and see what it does and see if it has any harmful effects on the aluminum and go from there. You can also
Google it and get some answers.

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Old 08-27-2008, 03:44 PM   #3 (permalink)
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muriatic acid is as close to hydrocloric acid as you can get,,,,sulfuric acid eats aluminum!,,all the way,,nothing left....i wouldn't do it
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Last edited by Lone20; 08-27-2008 at 04:00 PM. Reason: wrong type acid
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Old 08-27-2008, 04:00 PM   #4 (permalink)
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I just spoke with someone that totally agrees with you he said it can also turn the alum. black.
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Old 08-28-2008, 02:53 AM   #5 (permalink)
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Quote:
Originally Posted by fieldtrialer View Post
I just spoke with someone that totally agrees with you he said it can also turn the alum. black.
IT wont turn the aluminum black it will turn it white with black streaks. This is a process best left to a pro. I have 5 gall of aluminum acid was that i have had for several years now. I wont dare open the barrel.

Citric brightener works so much better and does much less damage.


If you must use either product it has to be done on a cool day less than 70 Deg. hose the trailer top top bottom don't be shy flood it.

Dilute whatever cleaner your going to use to its least potent form and Apply as recommended. DO NOT LET IT STAND AND DRY.

RINCE RINSE and Rinse some more.
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Old 09-03-2008, 01:19 PM   #6 (permalink)
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Do not, under any circumstances use muriatic or hydrochloric acid for aluminum. As others have said, you'll end up with black or black steaks (depending on the alloy) and the structural integrity of the aluminum may be compromised as well. I'd recommend a cleaner designed for alloy rims- they're usually like you described, brush on and spray off. Use the muriatic on your concrete but keep it away from your vehicles (31 years in the surface finishing/plating arena).

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Old 09-04-2008, 07:28 PM   #7 (permalink)
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thanks to everone I dodged the bullet on this one. I bought some acid from a local truck wash, followed his directions and the trailer looks real good. I have one small section that sort of has a runny shadow. I thought I will do it again just in that spot.
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