Much better MPG in Eco mode vs normal mode?

[cavemold]

I very much doubt the gas itself was the primary factor in 3mpg difference. I bet it was wind strength & direction, terrain, traffic.

Last weekend I went to Des Moines on Saturday. My truck (in my profile pic) is an ecoboost awd 4k tow on stock 225-60/18 Michelin Primacy, and for this trip I had a factory soft tri-fold tonneau installed.

25.2 mpg about 380 miles traveling mostly northeast with the cruise mostly set at 80. Wind 10-15 mph out of the NW, so a cross headwind. Returned on Sunday traveling SW, wind was the same, 10-15 out of NW, but now it's a partial tailwind and I have the cruise set at 82 but I got 29.7 mpg. I always use 91 octane.

Ah ok , that makes sense .

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[JimParker256]

That would be great test suprised nobody has done that

It's hard enough finding ONE Maverick... Trying to find TWO to run side-by-side might be tough!

 

[OT18]

What type of fuel did you on BP gas ? 87?

Yes, 87 octane

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