Hey guys just wondering what boats are having trouble with their fuel tanks leaking, caused by the ethonal in the fuel?

Thanks

Any tank. Aluminum and fiberglass are most prone to issues. E-10 is corrosive to aluminum more so when water is introduced. It is also a solvent and can dissolve some fiberglass resins and cause damage.

I thought I had the problem last summer. Turned out a water separator was leaking. got lucky.

I'm not aware of alluminum being any more or less corrosive than any other metal tank. We had to replace a steel tank on our houseboat that was rusting internally......it was replaced with alluminum. Last time I checked most all the builders are still using alluminum tanks............ What else is there to use?

Alcohol will corrode Aluminum at it's weakest point, The Welds. All tanks except some polymer tanks are subject to adverse affects of Ethanol!! Had my tanks redone at Skater in 2008 before Ethanol hit the pumps here in Atl.
Had To replace steel tanks in 2 of my Diesel work trucks because the 15ppm sulfer blend ate the liner out, and the gaskets in the fuel pumps.

the sulphur didn't eat it, the biodiesel that ain't supposed to be in there did... was it a Ford 6.0?

Isuzu Cab over Landscape Trucks

Biodiesel has ethanol in it. They use it to get the water out of the fuel after they wash it.

Also if your area has just gone over to ethanol blended fuel only the ethanol will dissolve the many years of that varnish like coating left behind. Then your tank is spotless inside. Here is were problems start as the ethanol can break the particles down so small they will easily go through a 10 micron filter and once they get to the heat of the engine during combustion they re solidify. This it the engine damaging part.

A good stabilizer will dissolve the particles.

Aren't they suppose to be upping the ethanol in gas even higher? Thought I heard that. The only place I can find ethanol free is the marina and ouch. Last year 20 gallons cost me just under a 100 bucks, that doesn't make much of a difference in the gas gauge when u have a 150 gallon tank.