Fuel Tank-Squarebody?

[sick472]

It's a big toss-up in my opinion. Felt-like materials soak up water, BUT also dry out easy...Rubber-like or tar-like materials don't soak up water, BUT can trap it. I redid both of my tanks on my K20 a couple years ago and did the following

Thoroughly cleaned the exterior, lightly scuffed, self-etch primed (the old reusable tank and the new one), then painted the tanks with a few heavy coats. I used rubber sheeting (about 1/10th inch thick) to put between the straps and the tank.

My thinking is that the heavy coats of paint and rubber strips will minimize rubbing and corrosion that ultimately causes the tank galvanized coating to disappear and allow rust to take ahold.