YAMAHA XT 250 3Y3 4Y1 RED PAINTED STEEL PETROL TANK 1980-1990+CAP/COMPATIBLE FOR

The marks are on top of the lacquer (automotive standard lacquer), which is protecting the paint inside. This could be easily removed by applying any good quality rubbing polish (3M) with the help of the soft cloth and you will see the marks vanishing right in front of your eyes.

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