Aluminium Fuel Tanks: to paint or not to paint?

joliette

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The twin aluminium fuel tanks for my Levi Settimo Velo (http://www.facebook.com/#!/group.php?gid=179427293999) will be arriving soon. I plan to mount them on wooden chocks covered with hard neoprene and hold them down with aluminium straps with hard neoprene under them. This will allow air to circulate around the tanks which will kept dry beneath a fixed cockpit floor.

I am thinking about painting the tanks to help prevent corossion, but there seem to be different schools of thought on this issue. Also, the fuel fillers (bronze) and tanks will be electrically bonded together and to earth - for static spark prevention - by wiring them to an anode.

I have read that a protective oxide layer forms on bare aluminium and will provide protection againt corossion if not scratched. Is this correct or is it better to protect the tank with a paint system? If so, what paint system would you recommend?
 
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