What's Over-Drive?

[dpk777]

I was wondering what difference it makes whether you drive with Over-Drive on or off.

Everyone seems to drive with it off (err...on i mean)

 

[loup garou]

Repost

 

[chin311]

off? you should drive with it ON...its almost like another gear...lower rpms @ high speeds...its nice on your wallet

 

[Mutilator]

Uh everybody should drive with it ON. Basically in a 4 speed automatic transmission OD = 4th gear.

 

[minendo]

Originally posted by: dpk777
Everyone seems to drive with it off.

Everyone I know that drives Automatics drives with it always on.

 

[iamwiz82]

overdrive is a gear in the transmission that has a ratio of less than 1. This means that the engine will be spinning slower than the driveshaft. For example, if you had a car with a 1st gear ratio of 5:1 and a 5th gear ratio of .78:1, your engine would spin 5 times as quickly as the driveshaft, and in 5th gear, your engine would be turning at .78 the speed of the driveshaft.

It basically saves gas.