"but it depends on where I buy gas. Murphy Oil (Walmart) won't get me half as far as gas from Kroger" --- interesting thought. I have wondered for a good while if some of the cut rate stations might sell gasoline that performs less than expected. We don't travel far but do buy a fair amount of gasoline but always from the same local station and performance seems to be constant. Dakota 318 - mileage not so good -- 15. Uplander, mileage better than expected -- 20 and this is the short drive school and back-- and LaCrosse driven 100 miles daily round trip - very good -- just reset the counter last night and was 26.6 for 4,600 miles.