My 2001 supercrew is tired and needed un update so while searching for a newer Supercrew found 2011 ECO Boost with 38000. Researched and read everything I could get my hands on before purchase. Got about 19.5 mpg avg first tank on premium with mixed driving. Second tank took trk camper and boat on trip and avg dropped to 12 mpg give or take but had plenty of power. Traveled with similar truck camper and boat on a 4dr dodge with HEMI that got 11 mpg give or take. So, I have been very pleased so far with the new truck and its performance. Trying this tank with 87 octane and mpg's look to be about the same in the 19 -20 range. Beautiful truck and I'm very happy. I am looking forward to many good years with it and thanks for this website.