most of the time it saves gas but you should use low gear when towing or going down a steep hill
If an automatic car is in off overdrive does it save fuel
Not if you have an automatic transmission.
4L60E automatic with overdrive.
When you will be sustaining a speed of over 45 mph
It is best to use overdrive at speeds above 55 miles per hour. Overdrive maximizes your fuel mileage at high speeds.
Overdrive is the normally allowed position in a Ford Explorer automatic transmission , once the vehicle speed is fast enough ( my Ford Explorer is 50 MPH ) the automatic transmission will automatically shift into overdrive
The people at Ford should be able to tell you
if it is an automatic leave it in overdrive. the transmission knows when to change into the overdrive gear. if it is a manual listen to the motor. if you have in overdrive and it bogs down while accelerating then down shift to a lower gear.
not recommended overdrive is for cruising at highway speed
You have to use it when you are driving in mountain areas where to have high speed is not a good idea. The overdrive function does allow the transmission to switch to higher gears.
I'm guessing the power mode is the same thing as Overdrive. Basically you only want to use power mode if you are hauling something with your vehicle.
Its basically just an extra gear. When you use overdrive while cruising at a high speed it lets you stay at the same speed with less RPMs, which saves gas