I held off buying a 2007 Explorer because I was told that the 2008 Explorer with the 4.6L engine option would be E-85 capable. Is this true. I can't find any documentation that is is, or is not. If not, when will it be? I am told that all it takes to be E-85 capable is a stainless steel fuel tank, stainless fuel lines and a computer revision. What is taking so long. E-85 where I live is more than 50 cents per gallon cheaper than regular gas.