is it okay to drive w/overdrive on all the time? or for speacial occasions. i've been using it and its very nice. i just dont want to mess up the tranny.
thanks for any input

 

Go to the "search" Icon in green on the right/top and type in Overdrive.

 

Yes, it's perfectly fine to drive with Overdrive ON all the time. In fact, it's normal to keep Overdrive ON. The only time you should take Overdrive OFF is when you are going uphill (or something similar) and you need more power. Leaving Overdrive ON won't mess up your tranny.

Nevin

 

if you do stop/go driving below highway speeds, leave it off. this prevents the transmission from constantly shifting 3-4.

 

leave it off? really? i always leave mine on...i never even think about it.

 

i usually keep it ON, just because that light bugs me on the dash and theres no need to have it off. BUt if im sccelerating onto the freeway onramp or going up a hill, somewhere where i need a little extra power i turn it off.

 

did the search nothing came up that answered my question =)




1

 

it's ok to leave it on...it just let's your transmission shift into 4th gear...if you leave it off it will stay in 3rd...

my daily commute is semi-stop and go so and 45mph or less so i leave it off so the transmission doesn't work too hard shifting from 3rd to 4th and then down and up etc...

 

better yet, get a manual transmission and shift yourself

 

you wanna do the conversion for me phuong?

 

I drive with mine off while driving under 55 mph (it's usually city stop & go driving) then when on the freeway I turn it on.

 

I drive around town witht he overdrive off but once i am up to speed on the highway i turn it on. Driving with it off give the car more pep! i think it may hurt the gas milage a little though!

 

Actually, when driving around 3000 rpm in 3rd gear vs somewhere around 2000 rpm in 4th gear, the gas mileage won't be affected drastically. You're better off not lugging the engine at lower speeds when you're accelerating/decelerating.

With the APEXi Multichecker installed on my Z, I could see the injector duty cycle. At 3000 rpm in 3rd gear, it'd be around 18% duty cycle. At 2000 rpm in 4th gear it'd be around 15% duty cycle.. very little difference when held at one rpm level. The difference, like you mentioned, is when you're accelerating. by having the revs up in 3rd gear, power/torque is more readily available. in R&T or Car & Driver, there's a small editorial on gas mileage and engine load. The author states that you're better off driving away from an intersection more briskfully rather than accelerate slow and lug the engine.

the same can be said for this situation.. leave OD off, have it in third, keep the revs up, keep the clutch plates happy