E10 and Aluminum Corrosion

[WRC]

Is anyone aware of aluminum corrosion problems (such as severe pitting in very short hours) in the presence of 10% Ethanol/gasoline blends? Does it become a problem above a certain temperature? Is there any reason to think that a low-sulfur gasoline would promote corrosion?

 

I understand that some low-sulphur fuels have also high levels of detergent agents.
Shell's Formula Shell (one of early efforts) caused all sorts of problems with early GM Vauxhall/Opel heads.

 

[Chumley]

What aluminum alloy in specific are you concerned about? Where and how is it used?

Many aluminum alloys will rapidly corrode in environments where they are subject to any abrasive loading. Most aluminum alloys rapidly form a fairly stable but soft protective oxide coating. However, when subject to even moderate abrasion or cavitation in the presence of oxygen at room temperature, they will corrode by means of rapid pitting and overall metal loss fairly rapidly. Aluminum alloys high in silicone tend to be more abrasion resistant.

Chumley

 

ethanol is not very corrosive that is why they use it in gas.
Methanol is corrosive to aluminum it oxidizes it in short order.