Hermann
Site Donor 2023
Last evening I did a fill up of 91 E0 for the 4th tank in a row in the Maverick Hybrid. My results were the best yet. 2/3 city 1/3 hiway in the 55-70 mph range. 49.4 MPG. It was a 1/2 tank short fill due to upcoming trip. The fillup was at the same pump, set on low flow to first click. 23¢ added to get to nearest quarter dollar amount.
Do I think premium helps. Yes, but I think the E0 is most of my approx 12% gain in mileage. Yes, I haven't had my coffee yet. Maybe constant use of premium is slowly reprogramming the ECU for better efficiency, or a dozen other possibilities that exist. Just presenting my 2¢ worth of verified results of switching to higher octane.
Do I think premium helps. Yes, but I think the E0 is most of my approx 12% gain in mileage. Yes, I haven't had my coffee yet. Maybe constant use of premium is slowly reprogramming the ECU for better efficiency, or a dozen other possibilities that exist. Just presenting my 2¢ worth of verified results of switching to higher octane.