SOHC.co.uk Forums > CB350/400

Rust in Tank

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Colonial-Clive (yindi):
I used brick/patio cleaner (hydrochloric acid) 1gallon for about £10 from your local builders merchant. Pour in leave for 15 mins empty back into container repeat if needed. Then rinse with water and then with petrol. Worked a treat on mine.

gtmdriver:
Use Deox-C from Bilt Hamber.

Does not affect paint or any other material. Dissolves rust but leaves good steel unaffected. Non-toxic and biodegradable.

It will clean the interior of the tank down to clean steel.

http://www.bilthamber.com/deox-c

Clunker:

--- Quote from: gtmdriver on July 22, 2017, 03:31:17 PM ---Use Deox-C from Bilt Hamber.

Does not affect paint or any other material. Dissolves rust but leaves good steel unaffected. Non-toxic and biodegradable.

It will clean the interior of the tank down to clean steel.

http://www.bilthamber.com/deox-c

--- End quote ---

I followed the link and this does sound like a good product according to the reviews but I was wondering if you have to treat the inside of the tank afterwards to stop flash rusting?

AshimotoK0:
We have a heated tank of  it at work .. it's good but you may be better with phosphoric acid that leaves an anti rust phosphate coating on the metal. DeoxC is a chelating agent much like oxalic acid but non toxic. I think most tank sealing kits use phosphoric acid treatment prior to application of the coating. 

gtmdriver:
Deox-C is far more efficient than phosphoric acid at actually removing rust but if you want a protective coating on the inner surface you could always give it a swill round with a phosphating agent after removing all the rust with Deox.

POR15 Metal Prep works well.

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