Granted, I'm an n of 1, but I had already tightened the nut behind the wheel and spent way too much time while driving playing with my ScanGuage before I got my Aerolid. I've posted better numbers loaded with a trailer with my Aerolid than running empty before. It may not be exactly 20%, but it's somewhere near there, and I would bet that A-B-A would bear that out. If anyone wants to help me lift mine on and off I'll do some runs, but I'm not moving that thing on and off my truck by myself!
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