is this that flexfuel stuff that some GM vehicles were made for? if so i think that the fuel system has to have some sort of special seals that are resistant to the properties of the ethanol, and something about it takes a lot more of it (like the injectors have to flow a lot more) than for gas to run properly...if this isn't the same stuff oops.
Fords and dodge's can run it too
Taurus has been ffv since 96 this is old skool tech