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What's the difference between OD & D??

Old Aug 14, 2003 | 11:18 PM
  #1  
warrior_91's Avatar
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From: Cedartown, Georgia
Car: 86 T/A
Engine: 305
Transmission: 700-R4 Auto
What's the difference between OD & D??

When is the right time to use DRIVE and OVERDRIVE? And whats the difference between the two?
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Old Aug 14, 2003 | 11:28 PM
  #2  
trans87's Avatar
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From: Cypress, SoCali
Car: 2006 Tacoma X-Runner
Engine: 4.0L DOHC V6
Transmission: 6-Speed Manual
Axle/Gears: 3:15 LSD
OD is over-drive. Good for when you are on the freeway or when you want good gas mileage. D is just drive or 3rd gear, so if you were on the freeway or just cruising along your RPMs will be higher using more gas and adding more wear but the car will be accelerate quicker than if it was in OD. The gearing is different in OD than in D. IE, OD would be like my 2:73 rear gears while D would be like 3:42s
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Old Aug 15, 2003 | 12:32 AM
  #3  
DannyT's Avatar
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From: Sacramento, CA
Car: 89 Iroc
Engine: 383
Transmission: 700R4
Axle/Gears: 3.45
Re: What's the difference between OD & D??

Originally posted by warrior_91
When is the right time to use DRIVE and OVERDRIVE? And whats the difference between the two?
Unless you are in heavy traffic you should just leave your shifter in [OD]. The [D] position means your car will not shift past 3rd gear while [OD] means it will shift in to 4th. Definitely put it in [OD] when on the freeway to get better mileage
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