Hello auto gurus,

What's the function of O/D (over drive) in the automatic gear system?

The "O/D Off" button disables your transmission's highest gear. Usually you'd want to do this when you notice the transmission shifting too often between O/D and the next lower gear. That happens in very hilly(ABEOKUTA) areas, or when the car is heavily loaded. The same types of situations where you would never use 5th gear on a manual transmission. Proper use of it will extend the transmission's lifespan and avoid excessive wear.

Here are some tips on how it should be used.

Press the button when passing another car on the highway. When passing another vehicle in an automatic transmissioncar, it is sometimes difficult to get the car to accelerate fast enough. Try clicking the overdrive button. By forcing the car into third gear, your engine will gain more toque and thereby be better able to accelerate past the other car.

Press the button when entering the expressway. As explained above, this will make it easier to efficiently accelerate up to cruising speed.

Engage the button when exiting the expressway. Click the button just as you turn onto the exit ramp, and let the engine help slow you down. Brakes have a greater tendency to overheat when used at high speed. Using the O/D lockout button will help to slow you down to a lower speed, at which point you can use your brakes.

Press the button when going up a long, shallow grade on the expressway. In such situation, sometimes the automatic transmission will fail to shift down soon enough, causing you to lose power. Engage the O/D lockout to force the car into thrid gear.

Engage the O/D lockout button when going down a long hill to help keep you from gaining too much speed. If the hill is steep, you may even need to shift the car down into second gear with the shifter. This will help prevent overheating your breaks.

u ok with that?

thanks sir,
Will try that out

I hope this won't consume more fuel ?