You need a baseline.
Set up a run that you can drive repeatably and long enough that filling error is minimized.
Throw some load in it. Have fidelity to the pickup community. A half-dozen 4x8s is the classic pickup mission.
If you don't go at it scientifically, you are just stabbing in the dark.
BTW. Weather warming up here on the frozen steppes and MPG coming up.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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