How hard is E85 to use? I hear that you have to drive your car till its completely dry of gas before you can fill up with E85. If i do have 91 remaining in the tank and i add E85 is it going to cause problems? And what about the other way around? If i am about to run out of E85 and there is no station around am i able to use 91?
I've switched back and forth a couple of times. I run it as close to empty as I can and then fill the tank with the other fuel. As a precaution, I don't go WOT until I've cycled through a full tank.
A better approach would be to keep a couple of empty plastic five gallon drums in the trunk and when you get low on gas, fill the drums instead of the tank and then keep driving until you run out or get down to where the range displayed shows as "--" and then fill the tank from the drums.