Did someone say Funny?
Good job on the first steps to hypermiling. When you get your Scangauge DO NOT trust the Trip MPG. You have to calibrate the consumption, and that usually takes about two to three tanks worth to get accurate. As far as the instant MPG is concerned, that will get corrected with the calibration as well, but it can be used as a guideline for better efficiency. Good luck and welcome to the forum.