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I believe overdrive should automatically be enabled on any car. Overdrive allows a car to drive at fast speeds with low engine input (low revs) resulting in better gas mileage. The downside is that you lose torque. You should be able to turn it off for things like climbing mountains and using engine breaking to go down them. Unless you turn it off, it's already on.

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โˆ™ 2006-09-07 07:21:17
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Q: How do you use overdrive on a Toyota 4Runner?
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