Current run with Dark Aero in tow from College Station to Ardmore at 65mph returned 27.43mpg and from Ardmore to Wichita at 65mph returned 28.85mpg.
Based on the EPA highway rating of 19mpg fer my truck, my cost savings from the first tank was $10.56 and the second tank was $10.64 fer a total of $21.20 fer this run up to Wichita.
Running light this time around...no passengers or heavy gear in the bed or in Dark Aero.