wait... we can reset the Gryphon's average mpg's? Ive never seen nor needed to do this because it fluctuates enough that when I am driving around town it shows 14-15 mpg's(actually getting about 12.5-13mpg's) and when I drive up to denver airport I have seen it climb up to 18, and my trip here to SLC this weekend it got over 20 at a few parts, but I only got 13.5 mpg's averaged out through the first tank of gas... , so I guess my question is why does it fluctuate like that? Ive never seen it stay on the same number for more than a few hours and that is when I was driving home through the flat part of wyoming... and a hours is pushing it, if I hit a big hill it would drop the average mpg's by 1 or 2 on the way up, then they would go back up to whatever they were after a few miles of flatter driving again...
oh and fyi this was all on winter gas, summer gas you can add 1ish mpg's to all the numbers except the 18 and 20...
just my observations...