No rear O2 sensor
No recent Tuneups or anything. just regular oil changes.
I make the trip to portland, 400 miles on the dot, at just below the Empty mark.
so say 400 miles and i use exactly 15 gallons:
thats 26.666 miles per gallon average. and thats with 2 other people in the car, all our gear, and going up and down a few mountains. i figure i only get like low low 20s on the first part of the trip on mountains, so that balances back to about 30 probably on freeway.