When to use overdrive
08-08-2006, 05:49 PM
#22
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Originally Posted by bob200587
I'm gonna have to disagree with you there.....
Also, the lockup torque converter on the newer models can unlock and feel like a shift, but its still in OD under light throttle. It only locks up in overdrive when you are cruising and then it doesn't have the loss of efficiency that you get with a normal automatic. If you look on www.fueleconomy.gov you will notice that a 2000 4runner automatic gets better mileage than the manual trans model. If you do the same comparison with a 1988 4runner the manual trans model gets better mileage. So you may be right for your 1st gen, but for third gens I say leave it in OD so that your TC can lockup and give you better mileage.
Last edited by tom_mag; 08-08-2006 at 05:52 PM.
08-09-2006, 04:19 AM
#23
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Originally Posted by tom_mag
Ok, If your truck is stock it will always get better mileage with the OD on...
I suggest each person determine what works best for them, since everyones' driving habits and terrain differ. Our vehicles don't know how to read our technical "know-how"...
08-17-2006, 06:50 AM
#25
Originally Posted by jct61765
I just had a guy argue with me, almost violently, about when to use overdive. I dont tow anything, I always leave my O/D on. He says you have to shut it off below 40mph or it will toast your tranny. Oh, he has a Dodge Durango. We dont even have to talk about that. Does anyone here shut off their O/D under 40mph?
Add a tranny cooler and change your fluids yearly and that tranny will last 300k miles or longer.
08-17-2006, 07:12 AM
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Originally Posted by drguitarum2005
... you should turn OD off when towing and in mountainous areas with hills etc.
01-20-2020, 07:47 PM
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If you look on www.fueleconomy.gov you will notice that a 2000 4runner automatic gets better mileage than the manual trans model. If you do the same comparison with a 1988 4runner the manual trans model gets better mileage. So you may be right for your 1st gen, but for third gens I say leave it in OD so that your TC can lockup and give you better mileage.[/QUOTE]
I have a 2001 4runner and the TC locks up at 50 MPH, I'm not always going that fast. What about speeds below that? Like say 35-40 MPH? I feel like leaving the overdive on at such slow speeds is unnecessary unless it's at a long distance. P.S the automatic probably gets better mileage than the manual because the gear ratios are larger.
I have a 2001 4runner and the TC locks up at 50 MPH, I'm not always going that fast. What about speeds below that? Like say 35-40 MPH? I feel like leaving the overdive on at such slow speeds is unnecessary unless it's at a long distance. P.S the automatic probably gets better mileage than the manual because the gear ratios are larger.
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