Post by
J-Owner »
https://forums.nicoclub.com/j-owner-u3840.html
Fri Dec 01, 2006 8:39 am
you can reset it at fill up to monitor how much your fuel consumption is or how many mpg you are getting. It does not reset itself you have to reset it.
If it is not reset then it constantly monitors your speed distance to determine mpg. I usually reset mine on highway traveling just to see how much better mpg I get on the interstate versus in town driving. I get about 17 or 18 mpg in the city and about 24 or 25 mpg on the highway.
I hope that helps.