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Old 04-07-2016, 12:24 AM   #1
Join Date: Jul 2015
Posts: 92

Have any of you noticed a lot of rust underneath the coach, especially on the metal floor supports? Is this normal? I was told it had been undercoated? I'm confused.
Has anyone found a suitable product which I could apply to prevent this.
I also had a lot of corrosion in both battery compartments.

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Old 04-07-2016, 12:49 AM   #2
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Join Date: Jun 2015
Posts: 617
Corrosion X is an incredible product and can be sprayed on most materials. I use it to undercoat vehicles that see salt and I also use it on the interior unprotected surfaces of metal airplanes.

Some people use ACF-50 but I have no experience with it.

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Old 04-13-2016, 09:21 AM   #3
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Location: Florida
Posts: 169
I've used this for years with good results. Place a small amount in a generic household hand pump sprayer, i.e. cleaner bottle. Mist it on the rusted metal. Allow to dry 24 hours then coat with paint or other coating of your choice.
I believe its active ingredient is Phosphoric acid.

Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a mineral acid having the chemical formula H3PO4. Orthophosphoric acid refers to phosphoric acid, which is the IUPAC name for this compound.
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..2016 Legacy 340KP SR340, 10,500 Miles..
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