Have just done this with the new arms
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& polybushes due to go on mine.
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Wire-wooled with a dremel, applied rust-remover to convert as much of the oxidisation back to sound metal as possible and two coats of hammerite.
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Now I just need the weather to improve long enough for them to be fitted.
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The joys of having no garage.
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.
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.
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Main problem with hammerite
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/ waxoyl is that if you have significant rust on a component the sealing effectively just seals the rust in
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- it doesn't stop it.
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With wire wool you obviously won't get all of it off but it minimises it as much as possible.
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It's not a major issue for components such as arms which are thick pieces of metal but obviously the more you can do to extend the longevity the better.
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I've happily used Dinitrol
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(a type of waxoyl used by a few garages I know into classic cars it seems) on the arches, mind.
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Anything is better than nothing.
![Smile :)](./images/smilies/icon_smile.gif)