I have a 2013 Ridgeline Sport and I used Mobil 1 Advanced Fuel Economy (AFE) 0W-20 for my first oil change. With the A/C off and at speeds of about 60 mph, and with relatively flat terrain, the mileage hits 24 to 25 mpg. This is with only me in the truck and about 25 pounds of luggage. I wasn't able to achieve this mileage until after the first oil change which was at about 7,500 miles. I should also mention that the VTM-4 fluid was also changed before I noticed the improved mileage. (VTM-4 fluid was changed early due to 3,000 miles of towing before the first oil change). Has anyone else gotten up to 25 mpg on the highway with their trucks using Mobil 1 AFE? The mileage I listed was reported by the truck. I most often use the same gas station and pump when I fill up. The mileage calculated by miles driven / gallons used was within 0.5 mpg of what the truck reported. I use 87 octane gas. I now have about 13,000 miles on the truck. I have not changed the oil for the second time yet.