thanks, i will update in probably a month. I have nitro+ in the Fusion right now, ready to refuel in a couple of days. Then I will go back to 87 for 1 tank, about 2 weeks worth. THEN comes the ACES. With winter 87, been getting about 24 mpg with some effort. With winter nitro+, 25.5 mpg. But I want to use 87 on a regular basis, and 93 infrequently. Fingers crossed!