Hotter thermostat for FE
I made a ~250 mile trip last month, and got 24 MPG on one leg, and 30 on the return. The elevations were not too different (maybe 30 feet), weather was similar, and weight was a little heavier on the return leg.
While I was vacationing, I swapped my 160* thermostat for a 195* one. (hey! I have to relax somehow!)
There ya go, engine temps really do play a role in efficiency.
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