NVislandia

In many areas gasoline is now being refined with 10% ethanol as MTBE is phased out. Many boat engines (my 240 EFI included) are not supposed to be fueled with ethanol (also true of aircraft engines). Some states, like Montana, have recognized this and allowed non-ethanol gasoline to be distributed for non-automotive uses. While this is good, I don't know if the oil companies will want the hassle of separate distribution.

In any event, as I understand it, all gasoline refined in Calif. now has ethanol, which means most of Nevada, most of Arizona and other states are receiving this blend as well. Is this going to cause short term damage to our engines or is this a long term issue? I can deal with replacing hoses a little more often but I wonder why Mercury had the warning in the first place?