I have a 102 gal Aluminum gas tank in my boat that is leaking, I removed all of the gas (Ethanol) today. It is a huge job to remove this tank. Do you have a product that can be put into the tank to seal a leak, and will it hold up to Ethanol. The leak seems to be a slow leak but I can not see if it is a crack or pin hole type of leak. I do know it is on the bottom of the tank do to the fact I only had a 1/4 tank of gas.