Next tank will tell if these numbers are optimistic. This tank is pretty much screwed and I introduced the gauges about 1/4th of the way through the tank (the first 1/4 was really bad, I think I went through 5 miles in one gallon
)
Course I do think that these results are pretty accurate, I have seen some people get 44 MPG going between 72-79 on all highway drives in this car. Only time will tell though.