Well, I do know my rear end is a 3.23, I do have a tach, and I know my tires are 25.8" tall. I guess I should just fill up my car and take it on the highway for like 40-50 miles and then fill up again and see what my mileage is. From what I understand, one of the theories is that my milage should be worse than city mpg because I'm at a constantly high rpm. The other theory is that it should be better because I edski's explanation. I'll just give em a try.
