Generally
Etching agent that you pour into the tank before using the tank seal, removes surface rust plus the tank gets a duller surface that the tank seal adheres to better.
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Etching tank preparation before tank sealing
325 kr
Tip!
Make sure the agent gets everywhere in the tank, pour off excess agent and allow to dry. Use a cabin heater or hair dryer if you don't have time to wait, the tank must be completely dry inside before you pour in the tank seal. Do not flush with water, just let the tank dry.
We found a good description in the magazine Wheels about how to go about sealing the tank. Click on the link and it will open in a new window.
