Amazing MPG gains... Magic fuel, or ???
I have driven 6975 miles since setting out on this cross-country trip back in early October, and I have recorded every single mile and each gallon of diesel fuel along the way (22 tankfulls so far) in...
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I can add that without all the scientific calculations that the OP included, when I fill up at Chevron, I get better mileage and performance than when I fill up at Sinclair. I've seen it on my dummy gage (lie - o - meter) and in the way my car performs.
