do you get more gas mileage by using overdrive all the time?
The short answer is not necessarily. On long distance travel (constant speed and little acceleration needed) the overdrive works great and saves you a lot of money on gas. Short trips (even on the freeway/highway) or while in stop and go traffic, your savings will be greatly reduced - in some cases (although few) it can actually cost you more money to use overdrive.
Search Jeep Grand Cherokee Questions
Jeep Grand Cherokee Experts
Related Models For Sale
Used Cars For Sale