---

I don't know why Boston Whaler uses foam around their aluminum tanks as that is the surest way to guarantee corrosion will occur. Modern aluminum fuel tanks are built of a highly corrosion resistant alloy but the moisture trapped by the foam will eat through the toughest aluminum eventually. I don't have a built in fuel tank on my boat but I have had them on others and without a doubt the best thing you can do for your tank is insure an adequate flow of fresh air around it. How to accomplish that on a whaler is something I have no clue about. I doubt painting the exposed surface of the aluminum will provide any additional protection from corrosion.