Filled up at home after the return trip and got 13.5. That included the leg from Pittsburgh to Erie then back to Winchester. I took a short cut back which knocks off 30 miles but it is a very hilly two lane instead of interstate. Might have had some winds also since it was beautiful in upper PA but rain showers south of the Mason-Dixon line. Also the gas in PA was at a "quickly mart" and not a name brand station. Might have got some ethanol. I just need a baseline so when some one asks I have an answer and for planning if we ever get to take a long trip again.:(