|
Hi Deb,
I would use 12. When you fill up, try to do at least the first 4 or 6 times at the same pump (with a level parking spot) and adjust fill amount. This will fine tune it.
The other key thing to do is to calibrate the "Speed" setting. It is best to do this with either a GPS, or on a highway with measured miles every 1/10th of a mile. I use the Trip B odometer and zero it as I pass a 10/20/30/40 mile marker, and then drive at least 30 miles. When you pass the +30 miles marker, not the exact distance registered on your Trip B odometer. Then do the math to figure out the percentage of increase (or decrease) needed to get the ScanGauge to register within a few 10ths of a mile. This will make the fuel economy number be much closer to the actual MPG per tank.
And you can see in my fuel log that I use this percentage correction when I enter the distance traveled for each tank.
|