Tyre stains on bare aluminum boat hull

My large aluminum boat has tyre stains along the bare aluminum sides of the hull from being tied up to jetties and pens over a long time that use old car and truck tyres as fenders. Being in a pen the wind/wave action can push the hull to rub on the tyres with considerable force. I note in your Q&A the use of heat for paving but would the temperature needed risk buckling the aluminum sides?

30560cookie-checkTyre stains on bare aluminum boat hull

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Anonymous
Anonymous

Maybe, try a spot where it doesn’t matter.

Dr Chemical

Try oven cleaner. Or if that doesn’t work try Brasso