 |
Should you use the D4 or D3 gear on an auto transmission? |
[Edit] |
Auto transmissions
- Use D4 or D with a circle around it (indicating OD for overdrive) almost all the time for best economy and lowest engine wear. There are two exceptions to this. When you are going up a long hill or hauling a heavy load and the transmission keeps shifting in and out of overdrive, it is easier on the vehicle to manually shift it to D3. Also, D3 can be used to slightly slow the vehicle when going downhill - this is called engine braking. Do not forget to shift back into D4 when you are past the hill.
(Here are some other answers)
D3 always when driving around town after say 55 cruising you should then release the gas slightly and shift to D4 (OD) but don't forget to shift on the highway the extra rpm of running in D3 at higher speeds will burn more gas cause faster engine wear, and also could cause engine to over heat. just a simple answer to your problem.
More input from FAQ Farmers:
- D4 NORMAL DRIVING D3 MOUNTAIN OR HILLY ROADS. SUGGEST YOU READ YOUR OWNERS MANUAL FOR MORE INFORMATION ABOUT YOUR TYPE OF CAR AND TRANSMISSION
First answer by Wade Donaldson. Last edit by Xtr 982. Contributor trust: 90 [recommend contributor]. Question popularity: 199 [recommend question]
|
Research your answer: |
Answers.com > Wiki Answers > Categories > Cars and Vehicles > Parts and Repairs > Transmissions and Drivetrains > Should you use the D4 or D3 gear on an auto transmission?
Our contributors said this page should be displayed for the questions below. (Where do these come from ) |
| If any of these are not a genuine rephrasing of the question, please help out and edit these alternates. |
