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Rusty rear drums and caliper question.

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I had my brakes refreshed just a few years ago. New calipers and drums. Now they are rusty as all get out. I know there is caliper paint and I am toying with using POR 15 for the front calipers.  (I know they make caliper paint-can I apply it to rust like the standard stuff?) Or should I have them blasted and powder coat them? 


For the drums, can I POR15 those as well?  I have used it before and Its almost like powder coating. Somewhere I read that it might not be a good idea to powder coat drums because it may reduce heat dissipation. Would that be a problem if I POR15 the drums? 


Any other remedies would be appreciated. 



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Brown is a pretty color.  It looks natural on drums and calipers to my eye. 


That rust isn't doing any damage.  I wouldn't go to the trouble.


Maybe rub them with Scotch-Brite pads and then an oily rag.

Brown is a pretty color.

I like brown calipers.


Wabi-sabi for the win.



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