I personally don't believe that. Even if it was more efficient in one way, it's less efficient in the sense that it's adding significantly more weight to your automobile.crudus said:Nope, for the following reason:
Yep, I hear it is even better for fuel efficiency anyway.Gaiseric said:No. I always keep at least half a tank.
I fill up either when the price of gas plummets or I'm below half a tank and it's convenient for me to go to the gas station. I don't go below like 1/8th of a tank though so I've never actually run out of gas.