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2006-12-02 00:30:14 · 5 answers · asked by nirjor 1 in Cars & Transportation Safety

i mean when i drive regularly o/d should off or on?

2006-12-02 00:48:31 · update #1

5 answers

over drive is used when driving on the highway to help save gas.

2006-12-02 00:40:27 · answer #1 · answered by c0mplicated_s0ul 5 · 0 0

It depends on the type of driving Mountain_ny's. Overdrive is like an extra gear in that, the engine runs at a lower rpm(revolutions per minute) than it does when driving in other gears. Because the engine is revolving slower in overdrive, it's using less gas. But this only works when one is driving on the freeway, or on roads where we can travel at least a mile or two, before coming to a controlled intersection.

Overdrive saves the most gas when driving for long periods at steady speeds, think of a human running at a steady speed.. not exerting themselves. Making alot of stops or driving below 40mph in overdrive, causes the transmission to shift back and forth too many times.. this causes the engine's rpm to speed up and slow down too many times. Think of that same runner speeding up and slowing down many times over... this will waste fuel and energy. Driving over steep mountains in overdrive, puts too much strain/torque on the engine.. this wastes fuel also. Drivers should listen carefully to the sound of their engine, if it doesn't sound like it's running too high or too low, then you know it's in the right gear and you're getting the best gas mileage.

2006-12-02 11:02:00 · answer #2 · answered by Tooler 3 · 1 0

typically, a car has 4 gears. Over drive allows the car to get into the 4th. Some turn it off, or down shift like ona munual trans, in order to get a boost. This is used for passing usually. Not a good idea to use it for extended periods at high speeds.

2006-12-02 08:42:06 · answer #3 · answered by ricks 5 · 0 0

it depends on the car and transmission. For example Hyundai's with O/D automatic transmissions will use overdriver when it is appropriate. The older Hyundai's with automatic transmissions with manual select for overdrive the manual suggests that it is OK to use it when ever you are not pulling a trailer or carrying very heavy weights. Go to the manufacturers web site and see if you can find it there or I would just call a dealer of the make of car and ask the service manager.

2006-12-02 09:43:35 · answer #4 · answered by Anonymous · 0 0

Over drive should only be ON when you have reached a cruising speed of more than 80k/h. Less than that, if you engaged over drive ON you will only strain your engine causing unnecessary damage to it.

2006-12-02 09:36:38 · answer #5 · answered by Ayemar 1 · 0 0

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