Cate&Rob Thanks for the knowledge down load. I had never noticed the "buzz" until I fueled with premium one day when I needed 33 gallons on a fill up. I also noted that throttle response seemed less, though I am sure that was very subjective. The fuel milage on our 2020 was about 10% below the value of running regular on that one tank, perhaps with extended use the computer would adjust and things would improve. I have heard rumors that certain Ford dealers might reflash your ECU to obtain the improved torque values of the 18 to 2020 3.5, rumor only. Again, Thanks,
Dave
Dave
Comment