NEW NEWS:
So here is some proof of how fuel vaporization matters…
A 33% improvement just running the winter bland gasoline which has a more ability to vaporized easier.
“In winter, gasoline blends have a higher Reid vapor pressure, meaning they evaporate more easily and allow gasoline to ignite more easily to start your car in cold temperatures.”
https://www.gasbuddy.com/go/summer-b...blend-gasoline
The change from 15MPG to 20MPG is 5 MPG improvement, that is .33% improvement, that is a major change.
I discovered this when I took the Explorer up to road speed, which is 75MPH posted and of course I was running along with traffic at 80MPH.
And on a scan of all my gauges I saw what seemed impossible, she was doing 22MPG: 22MPG at 80MPH…this did not stay 22 as load as other things acted on the SUV but it stayed at 19 to 21 all the way back to home…even when I kicked in the A/C. This was a drive of about 9 miles.
I took her out again the next day and it was still reading 18/20MPG at 70/80MPH….this does not compute.
All summer long she was reading 50MPH = 28/32MPG, 65MPH = 18MPG, 80MPH = 15/16MPG.
So this morning at 3PM I woke and wanted to test her a fully as I can….so first thing I checked was my scan gauge II was still set for a 4.6 engine… I thought it might had reset its self to different engine size. It had not, it still reads a 4.6.
So up on the freeway and ran normally until all was warmed up, then began testing on the return leg of the trip…
50MPH = 29/30MPG, 60MPH = 22/23MPG, 70MPH = 21/23MPG 75MPH = 21/23MPG even 80MPH was showing 20+MPG WTF!!!???
The really odd thing is my 50MPH reading of 29/32MPG is the normal reading I have been getting, it is the readouts for above 60 that are off….the 10MPG drop at around 60MPH seems to have disappeared somehow.