Ethanol is a solvent that can clean corrosion, oxidation and deposits from parts it touches thought the distribution process. It will clean out the gum, and varnish that may have accumulated throughout the fuel system. Ethanol attracts and absorbs moisture. Phase separation is a added concern with ethanol based fuels. Ethanol will separate from gasoline, when enough moisture has entered the fuel system. When separation occurs, ethanol will mix with the water. The ethanol water mix will then settle on the bottom of the fuel tank. This mixture will damage VST’s, fuel, pumps, and clog filters.
Stick with the same source of fuel.
Ethanol does not mix well (co-mingle) with MTBE and certain additive packages in fuel.
Co-mingling fuels results in a grayish white paste that covers filter mesh, and clogs filters.
Ethanol adds 2 points to the fuel octane, and has a lower BTU factor than gasoline.
Make sure that the fuel stabilizer you are using is compatible with ethanol based fuels.
10micron fuel filters are recommended for marine environments and ethanol fuel.
Keep you gas tank full.