I didn't know ScanGauge E existed, however, it doesn't seem like it would be a good system for tracking trip information, if it resets every time you shut down, like in the middle of a trip leg and you stop for lunch. I have the model II, while I find mileage "interesting", fuel used is more important, along with engine and transmissions temperatures.
Fred and Bonnie
2005 Dolphin LX 6375
Abby, Ruffles & Scarlett, "The Cats"