I believe that he mentioned filling the tank at the slowest speed, waiting an unspecified period, and topping off.
YouTube wasn't suggesting anything interesting, so I searched for "Double fuel economy," and found different scams than I expected--Shouty videos
Some guys released a video that didn't seem interesting, but they mentioned a 30-second top-off.
I wonder how much of a difference that makes.
Quote:
I get better gas miles in my V8 than I did my inline four cylinder
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What a maroon!
I finally reached the end of the "240" questions at the time I viewed this 6 hours ago.
Now there over more.
I am just going to assume they are mine.
All that I have done for 6 hours is respond to comments on one video!