We thought that the gas tank from our Volkswagen Super Beetle was a lost cause. It didn’t sport any holes, but the tank had a lot of corrosion build-up inside; when we tipped over the tank, rust flakes poured out.
We had two solutions.
For $225.95 plus shipping, we could order a reprod…
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I have used KBS exclusively for a number of years, I have not had any issues with the tanks I have sealed. The most important part of the process is the preparation! The cleaner the inside of the tank is the better the sealer will work, the tank must be clear of any loose debris. For larger tanks I have used an engine stand as a makeshift rotisserie to make it easier to distribute the sealer inside the tank. I also use a Metro blower (used for drying cars) to dry the inside of the tank before using the sealer, the inside of the tank must be clean and dry for the sealer to work properly. I normally let the sealer dry for a minimum of a week before reinstalling it.