Does alloy tank need treating?

[Al9000]

Is it necessary to treat the inside of my new alloy tank with something like Tapox or similar?  Or is that just for steel tanks to stop them rusting or fibreglass ones to prevent attack from ethanol?

Thanks,

Al

[chaterlea25]

Hi Al,
My experiences lead me to believe that lining a tank is a last resort 
Definitely no need to line an alloy tank 
Steel tanks can be derusted by several means and if sound then just use them

HTH
John

[Al9000]

John,

many thanks. I think I was just being over cautious! Logic made me wonder why I was sealing a brand new tank! I just wondered if the ethanol would attack the alloy?

Cheers

Al

[Johnny J]

I treated my stomach with Tapox a few years ago, nowadays I can have any number of shots without getting drunk.. ;-)

[Butch (cb)]

What Chaterlea said.

I've got tanks I've lined that I'm real regretting now.

[Al9000]

Apparently the ethanol content has 2 negative qualities. It allows the fuel to hold more water and it also makes the mixture conductive so the alloy can also experience "galvanic corrosion".   As long as the ethanol content is below 10% then the oxide layer already present on the surface of the alloy should be enough to protect it.

The issue with tanks that have been sealed already, maybe several years ago, is that the sealer used may not be ethanol resistant.