Red2000
NAXJA Forum User
- Location
- Arlington, VA
I have the 4.0 HO with an AW4 and the tow package if it matters. I drive through mountains at least once a week. Is there any advantage for gas mileage by shifting into 3rd instead of D? I notice the RPM's jump around when i shift but have not figured out the pattern. I'm just curious if i can manage an extra MPG or two by shifting while driving in the mountains.